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Space Shuttle Columbia STS-107 Special Coverage

Day to Day Timeline of Events

Researchers Assess Status of STS-107 Science Data

Tuesday, March 4, 2003 - 6 p.m. CST

The past week was a good one for the Columbia Accident Investigation Board, retired Adm. Harold W. "Hal" Gehman Jr., CAIB chairman, said today.

Gehman told a press briefing in Houston that a number of independent investigations into elements of Space Shuttle Columbia's destruction are "offering tidbits of information." But in response to questions, he refused to characterize how advanced the investigation is. "We don't know how far along we are because we don't know where we're going," he said.

The board continues to work seven-day weeks. "Our energy and seriousness have not flagged," Gehman said, adding that the board is confident it will find the primary and contributing causes of the accident.

Three other board members, representing each of the board's three groups, participated in the briefing, held at Houston's Lunar and Planetary Institute. Roger Tetrault of the material analysis group; Steven Wallace of the group looking at operations, training and flight readiness certification; and Rear Adm. Stephen Turcotte of the maintenance, materials and management group outlined progress.

Tetrault, former chairman and CEO of McDermott International, outlined debris finds, including tiles that had black, aluminum-containing deposits on them. "I think it would be fair to say we have more questions than answers now, but we're getting smarter fast." He said 22,563 pieces of debris have been found, of which 16,063 have been identified. Debris collected so far weighs 32,100 pounds, about 13.7 percent of Columbia's original weight, he said.

The search for debris continued in Texas Tuesday, though clouds kept search aircraft from flying. Ground crews found more than 1,000 pieces of material believed to be from the Shuttle, including thermal protection tiles and a 26-inch-diameter helium tank found near San Augustine, Texas, and a right-hand main landing gear actuator near Hemphill.

Today, 39 crews from the Nacogdoches command post, 35 crews from Hemphill, 34 from Palestine and 50 from Corsicana participated in the search. Due to heavy rains Monday, some crews worked only half days.

Navy-led dive teams continued their search in Toledo Bend reservoir and Lake Nacogdoches.

California volunteer posses completed a low-intensity search effort along the California coast without finding any Shuttle materials. They were looking for debris that might have fallen into the ocean and drifted to shore in Mendocino, Sonoma and Marin Counties 30 miles north and south of Columbia's re-entry track. Weather continued to postpone search activities in Nevada and New Mexico.

Friday, Feb. 28, 2003 - 6 p.m. CST

About 13 minutes of video recorded by Columbia's crew Feb. 1 as they prepared for landing was released today on NASA television. The video recorded on the flight deck was taken with a small camera mounted first to the right of Pilot Willie McCool and later held by Mission Specialist Laurel Clark.

Commander Rick Husband and Mission Specialist Kalpana Chawla, the other two crewmembers seated on the flight deck, also are visible in the video. The video begins about 7:35 a.m. CST when Columbia was about 500,000 feet above the South Pacific and ends when the orbiter was approaching the San Francisco Bay area, about 11 minutes before contact between Columbia and the Mission Control Center in Houston was lost. Apparently the rest of the tape had been destroyed.

Astronaut Scott Altman described the tape as showing the crew going through normal landing preparations. It is like tapes routinely shot during Shuttle re-entries, he said. It shows flashes and plasma events out the window typical of night entries, with nothing unusual noted.

The tape was found Feb. 6 near Palestine, Texas, on its take-up reel but without the tape case. On normal Shuttle missions, audio and video are normally recorded through to landing.

Lufkin, Texas, Mayor Louis Bronaugh visited the operations center at Lufkin today and accepted on behalf of his city a certificate of appreciation from FEMA's Scott Wells, the Federal Coordinating Officer for the Columbia recovery effort, and NASA's Allen Flynt and David Whittle, who are leading NASA's search efforts. The certificate thanked the City of Lufkin for its support of the search effort. Debris recovery coordination efforts were consolidated this week from several field centers into the single Lufkin site.

During the past two days, searchers continued to recover a variety of materials from the Space Shuttle Columbia, including a large section of the outboard corner of the left wing's inboard elevon, and the 17-inch disconnect assembly from the Shuttle's belly. The 17-inch disconnect is significant in that it may lead searchers to cameras that were mounted nearby for the purpose of documenting the condition of the external tank as it is jettisoned.

Weather cleared for some search efforts today, but continued to hamper others:

The 48 Corsicana ground teams resumed searches as ice thawed. Total searchers in the field today included 940 from the Corsicana base camp, 600 in Nacogdoches, 700 in Palestine and 740 in Hemphill. A total of 150 crews with 3,000 searchers combed the area.

Dive teams led by the Navy continued their search efforts in Toledo Bend reservoir and Lake Nacogdoches. Twelve helicopters resumed searches Wednesday from Palestine, but low ceilings subsequently kept search aircraft on the ground.

Earlier searchers recovered what is believed to be the Combustion Module-2 experiment facility that had been aboard the Spacehab Research Double Module in Columbia's cargo bay. Three flame-related experiments were conducted in the module during the STS-107 mission. Scientists estimate that more than 50 percent of data from those experiments was received by downlink during the mission.

The western-most find of confirmed Shuttle debris to date is a piece of tile found about 40 miles northwest of Lubbock, Texas. A low-intensity search effort is being organized along the California coast, looking for any evidence of material that might have fallen in the ocean and drifted to shore. Volunteer sheriffs posies are expected to search the shoreline in Mendocino, Sonoma and Marin counties, 30 miles north and south of Columbia's re-entry track.

Tuesday, Feb. 25, 2003 - 6:30 p.m. CST

The investigation into the loss of Space Shuttle Columbia is increasing in depth as well as breadth, retired Adm. Harold W. "Hal" Gehman, chairman of the Columbia Accident Investigation Board, said this afternoon. "Our commitment and resolve to get to the bottom of this is undiminished."

Gehman and three other members of the CAIB, Air Force Brig. Gen. Duane W. Deal, Air Force Maj. Gen. Kenneth W. Hess and NASA Ames Research Center director Scott Hubbard, spoke at a news conference at Johnson Space Center.

Gehman showed photos of a piece of Columbia heat-resistant tile found near Powell, Texas, southeast of Dallas. The tile had grooves in the ends of its bottom side and orange-colored deposits on its outward-facing surface. Gehman said the tile had sustained extreme heat damage. "This is not re-entry heat damage," he said. It remains to be determined, he added, how the damage to the tile occurred, as well as when and how the orange material was deposited.

He also talked about the western-most find of Shuttle debris to date, a piece of tile found about 40 miles northwest of Lubbock, Texas. He said the tile is believed to be from the upper surface of the left wing, near its attachment to the fuselage.

Deal, part of a group looking at material, maintenance and management issues for the board, said the CAIB is looking for a cause, in part through a process of elimination. "Our duty is to examine everything objectively," he said.

Board members were asked about the object observed on radar moving away from the orbiting Shuttle on Jan. 17 and re-entering the atmosphere three days later over the South Pacific. Board members described it as a lightweight material, about 1 foot by 1 foot in size. An extensive analysis of radar data that began after the Columbia accident led to the discovery of the object on Feb. 6. That analysis is continuing in an effort to determine the identity of the object.

Hess said the board would compare STS-107 with other Columbia re-entries. He said some commanders have reported wing roughness, while others didn't notice. Gehman said the board is looking carefully at weather at re-entry on Feb. 1, which he said was "in general, a particularly calm and benign environment."

In response to a question, Gehman said the board is looking very carefully, "from a dozen points of view," at the three Boeing analyses of possible tile damage from foam insulation from the external tank. No conclusions have been reached, he said.

Monday, Feb. 24, 2003 ¥ 5 p.m. CST

Helped by sunny but breezy weekend weather in Texas and Louisiana, ground searchers continued to recover debris believed to be from Space Shuttle Columbia. Among the finds were what was thought to be a main landing gear strut, additional parts of the left wing and a 4- by 6-foot piece of mid-body sidewall.

Other items included what appeared to be a piece of Orbital Maneuvering System tankage and protective heat-resistant tiles.

More than 2,400 ground searchers were in the field Sunday, in 20-member teams based in the Texas towns of Nacogdoches, Hemphill, Palestine and Corsicana. An additional 440 people were training for search activities. Methodical ground grid searches continued to be productive in aiding in the discovery of smaller pieces of shuttle debris.

High winds hampered air and water searches during the weekend. The addition of another Navy team brought the total number of dive teams to eight. Other dive teams represented the Houston and Galveston police departments, the Texas Department of Public Safety and the Environmental Protection Agency. Despite the wind, searchers were able to recover pieces of tile from Lake Bardwell near Waxahachie, Texas.

The effort to consolidate three search coordination field offices (Barksdale AFB, La., the Joint Reserve Base (Carswell Field), Texas, and Hemphill, Texas) into the main facility at Lufkin, Texas, progressed over the weekend.

Investigators searched sites near Caliente, Nev., for what could be a piece of Columbia debris tracked by air traffic control radar during the time of the spacecraft¬s Feb. 1 descent over California and Nevada. While some material was recovered in the area, none was confirmed as coming from Columbia.

Similar work to narrow the possible locations of other debris in the U.S. Southwest continued; although, no new areas were identified for further investigation. As of late Monday, no shuttle debris was confirmed west of the Littlefield, Texas. area.

Thursday, Feb. 20, 2003 - 6 p.m.CST

Investigators are searching the area of Caliente, Nev., for what could be a piece of Space Shuttle Columbia debris believed to have been tracked by air traffic control radar after it was shed early in the spacecraft's descent over California and Nevada Feb. 1.

Video imagery of Columbia's entry provided to NASA was analyzed by imagery, trajectory and ballistics experts. The results of that analysis were then provided to National Transportation Safety Board officials who reviewed air traffic control radar imagery in that area during the time of Columbia's descent. The review resulted in what is believed to be a significant radar track of a piece of debris as it fell to Earth. As a result, a search of the Caliente area near the Nevada-Utah border is under way using Civil Air Patrol assets. A search using additional means also may be forthcoming.

Similar work to narrow the possible locations of other debris believed to have been shed by Columbia above the U.S. Southwest continues, although no other areas have yet been identified for further investigation.

About 25,000 pounds of Columbia debris is now at Kennedy Space Center in Florida. That total is about 11 percent of the orbiter's weight as it descended from orbit. About 5,600 items from the spacecraft currently are at KSC.

The search for Columbia debris continues in Texas and Louisiana. So far, no confirmed Shuttle debris has been found west of Granbury, Texas, near Fort Worth.

The Forest Service says more than 2,100 searchers should be in the field by Friday. They'll be a part of more than 100 teams based in Corsicana, Nacogdoches, Hemphill and Palestine, Texas. Bad weather hampered the search on Thursday. The search is being intensified to beat the area's spring bloom, which would make debris harder to find.

NASA Administrator Sean O'Keefe Thursday re-emphasized the Agency's intent not to launch another Space Shuttle until the cause or probable cause of the Columbia accident is found and corrected.

At a press conference from Stennis Space Center in Mississippi, O'Keefe told reporters NASA would do nothing to compromise the Agency's emphasis on safety. "Nothing I'm aware of that would suggest than anything we did should cause us to change the way we do business" in that area, he said.

NASA's position is still that there is no favorite theory about the cause of the Columbia accident. "It's all on the table," O'Keefe said in response to a reporter's question.

Tuesdsay, Feb. 18, 2003 - 6 p.m. CST

An external tank virtually identical to the one launched with Space Shuttle Columbia Jan. 16 has been impounded at Michoud Operations at New Orleans, retired Adm. Harold W. "Hal" Gehman, chairman of the Columbia Accident Investigation Board, said today.

Speaking at a press conference at NASA's Johnson Space Center in Houston, he said the external tank, produced just after Columbia's, would be carefully examined. He added that during its visit to New Orleans last week, "we were extraordinarily impressed with what we saw at Michoud," in terms of staff and the facility itself.

Gehman was joined at the briefing by three fellow board members, Air Force Maj. Gen. John Barry, Steven Wallace, director of accident investigation for the Federal Aviation Administration; and Dr. James N. Hallock, chief of the Aviation Safety Division of the Transportation Safety Institute.

Berry leads the board's group looking at maintenance, material and management. Wallace heads the group looking at operations, crew training and life sciences. Hallock leads the group looking at engineering and technology evaluation.

"My job is to coordinate among all these individual investigations," Gehman said. He added that the pace of the investigation is accelerating rapidly. He promised that the board's final report would put the Columbia accident in the context of the nation's space program. He added that the first in a series of public hearings on the accident would be held next week.

At the briefing, Gehman said he was open to further expansion of the investigation board. The latest addition to the board, Dr. Sheila Widnall, a Massachusetts Institute of Technology faculty member and former Secretary of the Air Force, will join the board later this week.

Gehman announced the opening of the board's Washington, D.C., office and the appointment of Thomas L. Carter as board assistant for government relations. Carter will be the board's independent representative in Washington. He will maintain contact with Congress and Executive Branch organizations.

Carter is an Air Force Reserve flag officer with more than 10,000 flying hours, mostly as a commercial pilot. He lives in Charleston, S.C.

Anyone wanting to send information to the board by mail can reach them at: Columbia Accident Investigation Board, 16850 Saturn Lane, Houston, Texas 77058. Gehman also says the board is setting up its own web site and 1-800 number to help the public contact them directly.

The search for Columbia debris continues. Gehman thanked volunteers for their search efforts. "We still need debris," he said, adding that collection is very important to the board. He said about 4,000 pieces of debris are at Kennedy Space Center, of which 2,600 have been identified, catalogued and are out on the reconstruction hangar floor. An additional 10,000 pieces are headed toward Barksdale Air Force Base at Shreveport, La., or KSC.

The Federal Emergency Management Agency (FEMA) said that 77 percent of sites in Texas and 99 percent of sites in Louisiana where Shuttle debris had been reported have been cleared.

Board member Hallock said it appears that things were beginning to come off Columbia as it passed over California. He said that while it is important to understand what those pieces were, none has been found. As of early Tuesday, the western boundary of the debris field remained just west of the Fort Worth, Texas, area.

The Forest Service-led Southern Area Incident Command "Blue Team" has set up a base camp in Nacogdoches, Texas. The debris search team has about 350 people and is expected to grow to 650 people during the next few days. Two other teams with about 700 members from NASA and more than a dozen other organizations are being deployed to Palestine and Hemphill, Texas. The number of searchers is expected to grow to more than 2,000 by the end of the week.

Friday, Feb. 14, 2003 - 6 p.m. CST


The search continued for debris from Columbia, though efforts were hampered by rain in parts of East Texas. More rain was forecast for the area. As of early Friday, the westward boundary of the debris field remained just west of the Fort Worth, Texas area. Still, teams continued to investigate reports of debris as far west as California.

The Federal Emergency Management Agency reported that the Shuttle debris recovery operations were proceeding well. FEMA said 74 percent of sites in Texas and 89 percent of sites in Louisiana had been cleared.

About 400 Forest Service searchers were expected to join the effort by Monday, and that number was expected to increase to 2,000 by Feb. 20, FEMA said. Other federal, state and local emergency workers supported Shuttle disaster operations. Twenty-four of them worked in searches outside Texas and Louisiana.

Navy divers and their equipment were at Toledo Bend Reservoir on the Sabine River, which separates Texas and Louisiana. The Navy had taken control of water recovery operations and was expected to focus first on Toledo Bend and then on other lakes in the affected area. Water searches were expected to take about 45 days.

Members of the Columbia Accident Investigation Board flew to Marshall Space Flight Center in Huntsville, Ala., this morning after two days at Kennedy Space Center. The trip was designed to familiarize members with operations at the two NASA centers. In addition, members on Saturday were to visit the Michoud Operations facility near New Orleans, where shuttle external tanks are fabricated. The board planned to return to Houston Saturday night.

Thursday, Feb. 13, 2003 - 7 p.m. CST

The Columbia Accident Investigation Board said today preliminary analysis by a NASA working group indicates the temperature indications seen in Columbia's left wheel well during entry would require the presence of plasma. Plasma is a super heated gas surrounding the orbiter during re-entry.

The CAIB said heat transfer through the structure, as from a missing tile, would not be sufficient to cause the temperature indications seen in the last minutes of flight. Additional analysis is under way, looking at various scenarios in which a breach of some type could occur, allowing plasma into the wheel well area or elsewhere in the wing.

Other flight data, including landing gear position indicators and drag information, indicate it is unlikely the left landing gear was deployed early, the CAIB said.

The search continues in the western United States for debris from Columbia. As of early Thursday, no debris found farther west than Granbury, Texas, about 40 miles southwest of Fort Worth, had been confirmed as Shuttle-related. The first two trucks containing debris from Columbia arrived at Kennedy Space Center (KSC), Fla. Wednesday morning.

The Federal Emergency Management Agency (FEMA) reported today the Shuttle debris recovery operation is proceeding well. FEMA said 72 percent of sites in Texas and 84 percent of sites in Louisiana have been cleared.

The Environmental Protection Agency has 42 teams conducting operations in five Texas counties. Searches are focused on large structural items, and a plan is being developed to support expanded searches in areas where NASA-identified critical items have been found.

The Civil Air Patrol is expanding operations west of Fort Worth, and negotiations are under way to bring in a blimp to help search in the area from Fort Worth east to Palestine, Texas. The Navy is taking control of water operations, with dive teams and equipment arriving today. Searches will focus first on the Toledo Bend Reservoir and then turn to other lakes in the affected area.

The CAIB spent its second day visiting KSC. The trip's purpose is to familiarize members with operations at the center from which Columbia was launched Jan. 16.

On Friday the board is scheduled to visit the Marshall Space Flight Center (MSFC) in Huntsville, Ala. On Saturday members are scheduled to visit the Michoud, La., facility near New Orleans where Shuttle external tanks are fabricated, before returning to Houston Saturday night.

Leroy Cain, the Space Shuttle entry flight director on Feb. 1, will hold a press conference at 3:30 p.m. EST Friday. It will be carried live on NASA Television. Before that press conference, NASA-TV will carry a videotape of events inside the Shuttle Flight Control Room on Feb. 1. The video will be shown beginning at noon and 3 p.m. EST.

Wednesday, Feb. 12, 2003 - 7 p.m. CDT

Two trucks containing debris from the space shuttle Columbia arrived at Kennedy Space Center (KSC) this morning. They were the first bringing debris from Barksdale AFB near Shreveport, La., to KSC where investigators will lay them out, about as they were positioned on Columbia.

Members of the Columbia Accident Investigation Board (CAIB) arrived at KSC about 11 a.m. EST today. The group toured facilities, including the Orbiter Processing Facility Bay 2, housing the Shuttle Endeavour, and Bay 3, where Discovery is undergoing maintenance. The CAIB also visited the Vehicle Assembly Building where Shuttle Atlantis, with its external tank and solid rocket boosters, is atop its mobile launch platform. The CAIB met at intervals throughout the day with KSC officials to get an overview of ground processing activities.

On Thursday the board is scheduled to visit the Solid Rocket Booster (SRB) Disassembly Facility and tour the SRB assembly and refurbishment facilities. Members also will visit the Launch Control Center and Launch Pad 39A, where Columbia was launched.

Retired Navy Admiral Harold Gehman, CAIB chairman, spoke briefly with news media representatives. He said the CAIB wants to look at four things at KSC: launch procedures; Shuttle refurbishment between flights; the Columbia mishap reconstruction site; "and be sure in our own minds the process here for Columbia reconstruction meets our investigatory needs." The efforts will take place in the Reusable Launch Vehicle Hangar located adjacent to the Space Shuttle runway at KSC.

Gehman described the trip to KSC as an orientation visit. He said the CAIB would return to KSC a number of times during the investigation. The CAIB is scheduled to travel to Huntsville, Ala., and then New Orleans before returning to Houston Saturday night. Gehman said Sunday would be a workday, and that the board would be working seven- or six-day weeks "from now on."

More than 2,500 federal, state and local employees continued to search for Columbia debris in Texas and Louisiana today. Officials say they have the resources to cover every body of water in the debris trail within 5 weeks. While teams continue to investigate reports of debris as far west as California, no confirmed pieces of debris from Columbia have been found west of the Fort Worth, Texas area.

Hundreds of items continue to be collected from areas in eastern Texas and western Louisiana. Several hundred items were shipped in the past 24 hours to Barksdale from locations in Lufkin, Nacogdoches and Hemphill, Texas.

The International Space Station's Expedition 6 crew, Commander Ken Bowersox, Flight Engineer Nikolai Budarin and NASA Station Science Officer Don Pettit, took time Wednesday for interviews with CNN, ABC, CBS and NBC representatives. They talked about their shock and grief after being told the morning of Feb. 1 by Johnson Space Center Director Jefferson D. Howell Jr. of the loss of Columbia, and their willingness to remain aboard the ISS as long as necessary.

Tuesday, February 11, 2003 - 2 p.m. CST

Columbia debris recovery efforts continued today centered in areas of eastern Texas and western Louisiana. More than 1,600 recovered items are at Barksdale Air Force Base, Shreveport, La. Barksdale is the central field collection point for debris being shipped to the Kennedy Space Center (KSC), Fla., to begin Shuttle Columbia reconstruction.

In addition, more than 300 items are at each of the field collection sites in Lufkin, Palestine and San Augustine, Texas, awaiting shipment to Barksdale. A smaller volume is at Carswell Naval Air Station in Fort Worth, Texas. Shipments of debris from Barksdale AFB to KSC begin this week. Two truckloads of items departed Louisiana en-route to KSC today.

No confirmed debris has been recovered west of the Fort Worth area. Teams continue to investigate reports from 27 states and eight jurisdictions outside of the U.S. Of 179 reports received from California, 105 have been closed. Of 162 reports in Arizona, eight have been closed. Of 12 reports in New Mexico, four have been closed.

To assist recovery efforts, searchers are using Civil Air Patrol volunteers, airborne radar and other assets. U.S. Navy assets also may be used to search the waters of Toledo Bend and Sam Rayburn reservoirs due to several eyewitness reports of debris entering those lakes. The search may continue for several weeks. Civil Air Patrol volunteers also are searching west of the Fort Worth area in regions along Columbia's flight path.

Preliminary identification of some debris reported by the Mishap Investigation Team included a roughly two-foot square section of an external tank umbilical door, a hydrazine propellant tank and electronics equipment from the Ku-band communications system. The Ku-band communications debris was erroneously identified yesterday as one of Columbia's five flight control computers, known as General Purpose Computers (GPCs). No GPCs have been identified among recovered items. All identifications of items are preliminary.

On the International Space Station, Expedition Six Commander Ken Bowersox, NASA Station Science Officer Don Pettit and Flight Engineer Nikolai Budarin took time out from unpacking items delivered by a Progress-10 Russian supply craft for their first news conference since the Columbia accident. The conference took place about three hours after the Progress' thrusters boosted the altitude of the station approximately 6.5 miles to an orbit of 240 x 255 miles.

Bowersox said the crew first heard of the loss of Columbia from Johnson Space Center Director Jefferson Howell, and the crew is being kept apprised of the status of the accident investigation.

"My first reaction was pure shock," Bowersox said. "I was numb, and it was hard to believe that what we were experiencing was really happening. And then as reality wore on, we were able to feel some sadness."

Bowersox said Mission Control has reduced the crew's schedule to allow time for grief and reflection, and the crew was provided ample opportunity for communication with families for emotional support.

"We've had time to grieve for our friends, and that was very important. When you're up here this long, you can't just bottle up your emotions and focus all of the time," Bowersox said. "It's important for us to acknowledge that the people on STS-107 were our friends, that we had a connection with them, and that we feel their loss, and each of us had a chance to shed some tears. But now, it's time to move forward and we're doing that slowly," he said.

Bowersox and Pettit said they have told Mission Control they are willing to stay in orbit for a year or more if necessary, and they would consider the extra time a bonus, not a hardship. They said that if it were decided that a two-person crew should relieve them, that crew would be kept busy maintaining station systems but could still perform useful research.

"There would be time to do some level of research, and by virtue of having people here, you are always doing research on your body itself, looking at the effects of long duration, weightlessness on the human physiology," Pettit said. "So it's important to keep people on Station. If we could continue to collect data and life science data in data sets for 10 or 15 year periods, it may actually turn out to be one of the more valuable data sets we get," he said.

Monday, February 10, 2003 - 6 p.m. CST

NASA Administrator Sean O'Keefe reported today approximately 12,000 pieces of debris from the Space Shuttle Columbia have been collected along a 500-mile swath between Ft. Worth, Texas, and the Louisiana-Texas border. The debris is being tagged for identification and transported to the Kennedy Space Center (KSC), Fla., for use in the on-going investigation.

There is no primary or favorite theory as to what caused the Feb. 1 Shuttle accident. Fault-tree analysis and Probability Risk Assessments continue to be important tools to ensure no possible cause is overlooked. NASA's focus is on helping to determine the cause of the accident, finding solutions to the problems, and returning to safe flight operations as soon as possible.

A section of reinforced carbon-carbon from the leading edge of a Shuttle wing was recovered. It is believed to be from the left wing. Teams continue to search for and collect debris. The first pieces of debris are expected to begin the 18-hour journey by truck from Barksdale AFB to KSC on Tuesday and arrive on Wednesday.

Administrator O'Keefe said that NASA has done its best to be open and forthcoming with information about the accident investigation, and that it is time to transition that responsibility to the independent Columbia Accident Investigation Board (CAIB). NASA will continue to release information periodically as appropriate as it becomes available. "We will defer to the CAIB to set the pace of discussions of how the investigation itself is progressing," O'Keefe said. He added that the Board will advise NASA when the data and hardware that has been impounded will be released for continued Shuttle operations.

"We intend to fully support and ensure the Board has independence and objectivity to proceed as its members feel appropriate," Administrator O'Keefe said. "We will defer to the CAIB to set the pace of discussions of how the investigation is progressing."

O'Keefe said that the NASA Inspector General has been an observer on the ground from the beginning, helping to ensure the independence and objectivity of the CAIB under the terms of the Inspector General Act.

O'Keefe added that he intends to release the CAIB's recommendations to the public as soon as they are available. "It is our responsibility to make that informed judgment public," he said, explaining that the scope and breadth of the Board members' experience in aircraft and other types of accidents is more than NASA could bring to bear on the investigation.

The CAIB will conduct its first press conference at 3 p.m. EST Tuesday, Feb. 11, in Teague Auditorium at the Johnson Space Center, Houston. Board Chairman Harold W. Gehman Jr., will introduce CAIB members and discuss Board structure, activities, and plans for the investigation.

The Expedition 6 crew aboard the International Space Station continued to unpack supplies delivered aboard the Progress-10 resupply ship and to prepare for a 6:34 a.m. EST Tuesday re-boost of the station using the Progress thrusters. The re-boost will last about 22 minutes and increase the Station's orbit approximately 7 miles.

Commander Ken Bowersox, Flight Engineer Nikolai Budarin and NASA Station Science Officer Don Pettit will field questions from reporters during a news conference starting at 9:34 a.m. EST, Tuesday. The news conference will be broadcast on NASA Television with two-way question and answer capability from reporters at NASA centers.

While Shuttle missions are on indefinite hold, there is no urgency to adjust plans regarding the late April launch of a new Russian Soyuz TMA spacecraft or the makeup of its crew. Supplies on the Station are sufficient through June. There are enough propellants on board to maintain the Station's altitude and attitude for a year. Options are being considered with the International Partners to keep the station manned, safe and productive. "First we need to keep the crew safe," said Michael Kostelnik, Deputy Associate Administrator for International Space Station and Space Shuttle, "and second, is to keep the Station safe."

Friday, February 7, 2003 7 p.m. CST

The independent board charged with determining what caused the destruction of Columbia met with NASA Administrator Sean O'Keefe at the Johnson Space Center (JSC), Houston. Space Shuttle Program Manager Ron Dittemore flew to the External Tank manufacturer in Michoud, La. to discuss processing of the tank with engineers. Recovery teams continued to search for debris.

Dittemore told an afternoon briefing that a small portion of the reinforced carbon-carbon insulation of the leading edge of one of the Shuttle's wings was found in the Fort Worth, Texas area. It measures approximately 26-27 inches in length and 18 inches wide. It has not been determined whether it is from the left or right wing. The magnitude of the search for shuttle debris has expanded, with more than 1200 people involved in the recovery effort, including 220 from NASA and 800 National Guardsmen.

The investigation is entering a new phase, now that the Columbia Accident Investigation Board (CAIB), chaired by retired Navy Admiral Harold Gehman, Jr., has taken over the inquiry.

"This will be a long, painstaking process," Dittemore said of the investigation. "But I am proud of this (Shuttle Program) team. They have risen to the occasion."

Administrator O'Keefe echoed those statements when he met with employees at the JSC, praising them for their dedication during a time of grief, while vowing that the space program would emerge from the accident stronger than ever.

The CAIB will be based near JSC. The CAIB Charter is available on the Internet at: http://www.nasa.gov/columbia/board_documents.pdf

In his afternoon briefing, Dittemore presented charts showing the sequential shutdown of sensors during the final minutes of Columbia's flight as the orbiter encountered a problem as yet undefined. He also revealed a fuzzy photo taken by Air Force cameras as Columbia flew overhead. Dittemore discounted earlier press reports, which interpreted the damage, as premature. He said, " It is not clear to me that this photo reveals anything significant at this point."

While data analysis continued, the residents of the International Space Station completed their unloading of a Russian Progress resupply ship today and conducted a variety of biomedical experiments. Expedition 6 Commander Ken Bowersox, Flight Engineer Nikolai Budarin and NASA ISS Science Officer Don Pettit are in their 76th day in space, their 74th day on board the complex.

With shuttle missions on indefinite hold, NASA managers are discussing whether adjustments are needed to the late April launch of a new Russian Soyuz TMA spacecraft from the Baikonur Cosmodrome in Kazakhstan. It would be manned by a "taxi" crew that delivers the craft used for assured crew return to the Station and returns to Earth in the Soyuz currently at the station. Potential options are being looked at in concert with the International Partners to keep the Station manned, safe, and productive.

While there are no plans to remove the Station crew during the Shuttle recovery period, discussions are ongoing to ensure proper manning and supplies until Shuttles fly again. Another Progress cargo vehicle is scheduled for launch the Station in June to maintain a robust supply of food, fuel, and maintenance components.

The Progress at the Station may use its engines early next week to boost the Station, two nautical miles at its apogee and 10 nautical miles at its perigee, to place the station at the correct altitude for the late April Soyuz launch. A decision will be made Monday when the boost will occur.

On Tuesday, the Expedition 6 crew will field questions from reporters during a news conference from the Station beginning at 9:34 a.m. EST. The news conference will be broadcast on NASA Television with two-way question and answer capability from reporters at NASA centers.

The next STS-107 Accident Response briefings will be on Monday from NASA Headquarters in Washington, D.C. The time has not yet been determined. It will also be on NASA TV, with multi-center question and answer capability.

Thursday, Feb. 6, 2003 - 7:00 p.m. CST

The independent board charged with determining what caused the destruction of the Space Shuttle Columbia and the loss of its seven astronauts began its work today at the Johnson Space Center, Houston. Recovery teams continued to search for debris from California to Louisiana.

Under the leadership of retired Navy admiral Harold Gehman, Jr., the Columbia Accident Board received a briefing from Shuttle Program Manager Ron Dittemore. The board began the process of gathering material collected since Columbia's breakup during reentry just 16 minutes before landing on Feb 1.

NASA Administrator Sean O'Keefe reaffirmed the Board will act as a "totally independent entity in assessing all of the factors" associated with Columbia's loss. Administrator O'Keefe added, "We will be guided by the findings of the Board."

As search teams looked for debris for hundreds of miles throughout the west, the southwest and the Gulf Coast, O'Keefe said he met with the International Space Station Partners today following the memorial ceremony for Columbia's astronauts at Washington's National Cathedral attended by Vice-President Cheney. O'Keefe said the Partners expressed their support for the recovery effort and NASA's vow to find the cause for the accident for the resumption of safe flight operations.

O'Keefe indicated that Admiral Gehman may consider adding another member or members to the Independent Board that have no affiliation or ties to NASA in further strengthening its charter. The Charter is available on line at: http://www.nasa.gov/columbia/board_documents.pdf

O'Keefe will appear before a joint hearing of the Senate and House Science Committees, Wednesday, Feb. 12, to provide details of the progress of the investigation.

In his afternoon briefing, Dittemore described the pace of the inquiry and data and debris collection as "fast and furious." He said the Shuttle program would support Admiral Gehman's Board "in any way we can".

Dittemore said more than 1000 pieces of Shuttle debris have been recovered. Items found as far west as California are currently being analyzed to see whether they are from Columbia. As of today, no debris found west of Fort Worth, Texas, has been positively identified as coming from Columbia.

"No possibility is being ruled out as the root cause for Columbia's loss," Dittemore said. "We are still looking for that elusive missing link." Dittemore said bad weather in the west today hampered efforts to recover additional debris. The forecast calls for improving conditions by the weekend.

The recovered debris will be analyzed at Barksdale Air Force Base, La., before being returned to the Kennedy Space Center for reconstruction of Columbia, to the extent possible, and final disposition.

Dittemore added a fault tree is being developed, based on existing Probability Risk Assessments. He said the investigation team has received a large number of still images and video, which are being examined to determine if they are authentic and if they can shed light on the investigation.

At the memorial service at National Cathedral, Cheney said of Columbia's astronauts, "They were soldiers and scientists and doctors and pilots, but above all they were explorers." "They were envoys to the unknown," Cheney added. "They advanced human understanding by showing human courage."

Aboard the Station, Expedition 6 Commander Ken Bowersox, Flight Engineer Nikolai Budarin and NASA Science Officer Don Pettit continued to unload the Russian Progress resupply ship that docked Tuesday.

Payload controllers continued to analyze the new power components installed yesterday in the Microgravity Science Glovebox in the Destiny laboratory to try to determine why a circuit breaker popped after it was powered on by Pettit. The science facility remains off while the troubleshooting effort is underway.

On Friday, a memorial ceremony for Columbia's astronauts will be held at the Kennedy Space Center. Florida Governor Jeb Bush, Administrator O'Keefe and former astronaut Robert Crippen, Columbia's first pilot on STS-1, April 12, 1981, will attend. The ceremony will be live on NASA Television at 8:15 a.m. EST, the exact time of Columbia's deorbit burn last Saturday.

Wednesday, February 5, 2003 - 7:00 p.m. CST

The search for clues about what caused Columbia's breakup during reentry Saturday, and the hunt for key debris from the orbiter, expanded today with recovery teams deployed in California and Arizona.

Four days after Columbia broke apart 16 minutes prior to landing, Space Shuttle Program Manager Ron Dittemore said the inquiry into the cause for Columbia's demise is "picking up speed". But Dittemore said efforts to draw any new information from an additional 32 seconds of data acquired by ground computers following the loss of voice communications with Columbia have so far been unsuccessful.

In a briefing, Dittemore said the engineering evaluation teams are focusing their attention on "something other" than insulating foam on Columbia's external tank that fell off 80 seconds after launch striking the left wing, as the reason for the accident.

"It does not make sense that a piece of (foam) debris caused the loss of Columbia and its crew," Dittemore added. He reiterated Columbia tried to compensate for increased drag on its left wing in the seconds prior to its breakup, firing steering jets to right itself. But Dittemore said of Columbia,"It was doing well, but it was losing the battle."

As the engineering analysis continued, the remains of Columbia's astronauts were flown to Dover Air Force Base, Delaware, where identification of the astronauts will be completed. At the conclusion of the forensic analysis, the remains will be released to the families for burial.

In an earlier briefing, Michael Kostelnik, NASA's Associate Administrator for International Space Station and Space Shuttle, said the recovery operations are moving ahead "full steam", involving 2500 people nationwide from federal and local agencies. Kostelnik said NASA has added a task force to integrate the work between numerous engineering teams that are reviewing over Columbia's data and the Columbia Accident Review board, chaired by retired Navy Admiral Harold Gehman, Jr.

Kostelnik said that although a relatively small percentage of Shuttle debris has been recovered so far, segments of large components such as Columbia's nose cone and main engines have been found. The focus of the recovery effort and the data analysis, according to Kostelnik, continues to be Columbia's left wing area, although no element of the orbiter has been exonerated in the ongoing inquiry.

Aboard the International Space Station, Expedition 6 Commander Ken Bowersox, Flight Engineer Nikolai Budarin and NASA ISS Science Officer Don Pettit spent the day unloading the Russian Progress resupply ship that docked to the ISS Tuesday, carrying one ton of food, fuel and supplies.

Pettit unstowed replacement parts for the Microgravity Science Glovebox from the Progress and installed them in the facility in the Destiny laboratory in an effort to revive the Glovebox that has been dormant since November following a power failure.

Pettit powered up the Glovebox, but a circuit breaker in the system popped and payload controllers told Pettit to shut it down so they can evaluate its current status.

On Thursday, NASA Television will broadcast a memorial ceremony for Columbia's astronauts from National Cathedral in Washington, D.C. at 10:00 a.m. EST.

The next STS-107 Accident Response briefing will be held on Thursday at 4:30 p.m. EST from the Johnson Space Center, Houston, also on NASA TV, with multi-center question and answer capability for reporters at NASA centers.

Tuesday, February 4, 2003 - 8:00 p.m. CST


As NASA paused to pay tribute to Columbia's astronauts, the agency reported making "considerable progress" in recovering debris from the Space Shuttle and analyzing data in the search for clues to what caused the orbiter to breakup 16 minutes before its landing last Saturday.

President and Mrs. Bush joined NASA Administrator Sean O'Keefe in honoring astronauts Rick Husband, William McCool, Dave Brown, Kalpana Chawla, Mike Anderson, Laurel Clark and Ilan Ramon in a ceremony at the Johnson Space Center, Houston. President Bush said the nation was "blessed" to have such men and women serving the space program, and although NASA is being tested at this time, "America's space program will go on."

In an afternoon briefing, Michael Kostelnik, NASA's Associate Administrator for International Space Station and Space Shuttle said several engineering teams continue to work round-the-clock to reconstruct the timeline of the final minutes of Columbia's flight from extensive data that is being analyzed.

Kostelnik said the Columbia Accident Investigation Board, chaired by retired U.S. Navy Admiral Harold W. Gehman, Jr., is on scene at Barksdale Air Force Base, La. where the recovery of debris and human remains is being coordinated.

Kostelnik reported that larger and denser pieces of debris have been found in Louisiana, possibly including parts of Columbia's main engines. He said recovery teams have been dispatched to California and Arizona, where debris has been reported. Kostelnik indicated debris recovered from areas farthest to the west would be critical, possibly providing information about the early stages of Columbia's breakup.

Earlier today, a Russian Progress resupply ship successfully docked to the International Space Station at 9:49 a.m. EST, delivering a ton of food, fuel and supplies to Expedition 6 Commander Ken Bowersox, Flight Engineer Nikolai Budarin and NASA ISS Science Officer Don Pettit. The Progress has given the Station resident crew a "solid" supply of consumables, enough to sustain operations through at least late June, according to Kostelnik.

Bowersox, Budarin and Pettit opened the hatches between the ISS and the Progress this afternoon and will begin unloading its supplies on Wednesday.

Asked about contingency planning for the Station for the rest of the year, Kostelnik said all options to sustain a human presence on board in the temporary absence of Shuttle flights are being explored. The next Shuttle flight aboard Atlantis in March was to have brought the Expedition 7 crew to the ISS and returned to Earth the current resident crew.

Two STS-107 Accident Response briefings will be held on Wednesday, Feb. 5 and will be broadcast on NASA Television with multi-center question and answer capability for reporters at NASA centers. The first briefing is from NASA Headquarters in Washington at 11:30 a.m. EST. The second with Space Shuttle Program Manager Ron Dittemore from the Johnson Space Center is at 4:30 p.m. EST.

Monday, Feb. 3, 2003 - 7:00 p.m. CST
NASA engineers continued to review data and recover debris from the Space Shuttle Columbia today as the analysis of what caused the orbiter to break up Saturday en route to landing continued.

Space Shuttle Program Manager Ron Dittemore told an afternoon briefing that several teams of engineers are making progress in their study of data and video from Columbia's launch and entry, but cautioned that it is a "massive job" requiring round-the-clock efforts to piece together the events that led to a loss of communications with the Shuttle over north central Texas 16 minutes prior to touchdown.

Still, Dittemore said NASA would pause Tuesday for a memorial ceremony at the Johnson Space Center at 1:00 p.m. EST to honor the lives and the memory of Columbia's astronauts, Rick Husband, William McCool, Dave Brown, Kalpana Chawla, Mike Anderson, Laurel Clark and Ilan Ramon. President and Mrs. Bush will join NASA Administrator Sean O'Keefe at JSC for the memorial which is closed to the public, but which will be broadcast on NASA Television.

Dittemore said the memorial represents an opportunity to take time to remember the sacrifice of the astronauts, to mourn them and to "remember our friends."

Dittemore offered additional and refined information regarding the timeline of events that led to Columbia's breakup on Saturday (all times CST):

› At 7:52 a.m. CST, three-left main gear brake line temperature sensors showed an unusual rise in the left wheel well area.
› At 7:53 a.m., a fourth left brake line strut actuator temperature sensor showed a 30-40 degree rise in temperature over a five-minute period, slightly higher than reported yesterday.
› At 7:55 a.m., A fifth left brake line main gear sensor showed a sharp rise in temperature.
› At 7:57 a.m., left wing temperature sensors failed "off-scale low", meaning no further data was being received on the ground.
› And at 7:59 a.m., just before communications was lost with Columbia, there was evidence of drag on the aerosurfaces of the left wing, causing two out of four yaw steering jets in that area of the Shuttle to fire for 1.5 seconds to counteract the increased drag.

Dittemore said more time will be needed to retrieve an additional 32 seconds of data acquired by ground computers after communications was lost with Columbia to see if it is useful to the inquiry. He said engineers would go directly to the Tracking and Data Relay Satellite System ground station hub in White Sands, New Mexico to collect and analyze that data in its pristine form.

Although the investigative teams have a "high interest" in the left hand wheel well area of Columbia, Dittemore cautioned that a temperature increase there does not indicate that a structural problem occurred as a factor in the vehicle's breakup. In fact, Dittemore said the data suggests that "something else" may have been happening at the time, not indicative of a structural breach.

Responding to inquiries regarding a piece of foam insulation which fell off Columbia's external fuel tank about 80 seconds after launch that struck the left wing of the Shuttle, Dittemore said imagery analysis showed that the foam measured about 20 inches by 16 inches by 6 inches and weighed about 2.67 pounds. He reiterated that engineering analysis conducted during the flight concluded for NASA managers that although the foam might have caused some structural damage to the wing area, it would not have been sufficient to cause a catastrophic event.

"There is some other missing link contributing to this event," Dittemore said. We are extremely interested in seeing any debris that may have fallen upstream of the main impact area," referring to any additional debris which might be recovered in an area to the west of Texas.

Earlier today, former President George H.W. Bush and Mrs. Barbara Bush visited the International Space Station flight control room at the Johnson Space Center, Houston, TX to pay their respects to the flight controllers and to the Expedition 6 crew aboard the orbital complex.

The former president told Expedition 6 Commander Ken Bowersox, Flight Engineer Nikolai Budarin and NASA ISS Science Officer Don Pettit that President Bush relayed his "full confidence in the space program" in a conversation with the elder Bush Sunday. The former president told the crew the men and women of NASA were showing "great courage" in the wake of the accident.

Bowersox, Budarin and Pettit spent the day preparing for the docking of a Russian Progress resupply vehicle to the ISS Tuesday at 9:50 a.m. EST. The new cargo ship, which contains a ton of food, fuel and supplies for the crew, was successfully launched Sunday from the Baikonur Cosmodrome in Kazakhstan. NASA TV coverage of the Progress docking to the ISS begins at 9 a.m. CST Tuesday.

The next STS-107 Accident Response briefing will be held on Tuesday, Feb. 4 at NASA Headquarters in Washington at 4:30 p.m. EST. Status reports will be issued as developments warrant.

NASA TV is on AMC-2, Transponder 9C, vertical polarization at 85 degrees west longitude, 3880 MHz, with audio at 6.8 MHz.

Sunday, February 2, 2003 - 8:30 p.m. CST

Aided by federal and local agencies, NASA stepped up its inquiry into the loss of the Space Shuttle Columbia and its seven astronauts. Multiple investigative teams continue to pore over engineering data in an effort to uncover the cause of the breakup of the orbiter over Texas on Saturday 16 minutes from landing.

Space Shuttle Program Manager Ron Dittemore told an afternoon briefing (Sunday, February 2, 2003) that a Mishap Response Team is gathering data from numerous engineering teams in the early stages of the investigation and is receiving assistance from the Federal Emergency Management Agency, the National Transportation Safety Board, the Federal Bureau of Investigation and local law enforcement agencies, among others.

Dittemore said that as Commander Rick Husband, Pilot William McCool, Mission Specialists Dave Brown, Kalpana Chawla, Mike Anderson, Laurel Clark and Israeli Payload Specialist Ilan Ramon are mourned, the recovery of debris from Columbia and human remains is being coordinated at Barksdale Air Force Base, La.

Dittemore thanked residents in the areas where debris fell after Columbia's breakup for cooperating in the recovery effort but cautioned them not to handle debris that could contain toxic substances.

Dittemore reconstructed the final minutes of Columbia's flight before communications was lost. He reiterated the failure of four temperature sensors associated with the shuttle's left hand elevons at 7:53 a.m. CST Saturday amidst a 20-30 degree rise in left hand bondline and strut temperatures over a five-minute period near the left wheel well of the orbiter. Columbia was flying over California at the time at an altitude of about 220,000 feet traveling 21 times the speed of sound.

One minute later, over the region of eastern California and western Nevada, Columbia's mid-fuselage bondline temperatures above the left wing experienced an unusual temperature increase. It rose 60 degrees over a five-minute period. No such temperature increase was noted on the right side of Columbia or in the Shuttle's cargo bay. Columbia was about 212,000 feet above the Earth, flying at Mach 20.

At 7:58 a.m. over New Mexico, telemetry showed a larger than normal drag on the left side of the shuttle, and an indication of an increase in pressure in the left main landing gear tires. Dittemore said the data suggests the tires remained intact. Columbia's altitude was 209,000 feet.

At 7:59 a.m. over west Texas, the data showed Columbia continuing to react to an increased drag on its left side, trying to correct the movement by rolling back to the right. Dittemore said the response of the orbiter was well within its capability to handle such maneuvers.

At that time, seconds before 8 a.m. CST, all communications was lost with Columbia as it flew at an altitude of 207,000 feet, 18 times the speed of sound.

Dittemore indicated that ground computers may contain an additional 32 seconds of data which could provide additional information in the analysis of Columbia's breakup.

He added that the loss of some foam insulation from Columbia's external fuel tank, which struck the shuttle's left wing about 80 seconds after launch was "inconsequential" based on video imagery review conducted by engineering specialists. However, he said nothing has been ruled out as a possible cause for the accident.

Robert Cabana, the Director of Flight Crew Operations at the Johnson Space Center, relayed thanks from the families of the astronauts for the outpouring of support received from around the nation and the world.

Cabana said that the Expedition 6 crewmembers aboard the International Space Station are "grieving" for the loss of Columbia's crew, but are in good spirits as they continue human spaceflight and scientific research aboard the orbital outpost. Cabana said Commander Ken Bowersox, Flight Engineer Nikolai Budarin and NASA ISS Science Officer Don Pettit are preparing for Tuesday's arrival of a Russian Progress cargo ship. Progress 10 was launched this morning from the Baikonur Cosmodrome in Kazakhstan.

On Tuesday, Feb. 4, President and Mrs. Bush will join NASA Administrator Sean O'Keefe at the Johnson Space Center to pay tribute to Columbia's astronauts during a special memorial service. The ceremony to honor Columbia's seven crewmembers is scheduled to begin at 1 p.m. EST and will be broadcast on NASA Television. The service is not open to the public.

The next STS-107 Accident Response briefings are on Monday, Feb. 3 at NASA Headquarters in Washington at 11:30 a.m. EST and at the Johnson Space Center at 4:30 p.m. EST. Status reports will be issued as developments warrant.

NASA TV can be found on AMC-2, Transponder 9C, vertical polarization at 85 degrees West longitude, 3880 MHz, with audio at 6.8 MHz.

A Statement from the Families of Columbia
On January 16th, we saw our loved ones launch into a brilliant, cloud-free sky. Their hearts were full of enthusiasm, pride in country, faith in their God, and a willingness to accept risk in the pursuit of knowledge --- knowledge that might improve the quality of life for all mankind. Columbia's 16-day mission of scientific discovery was a great success, cut short by mere minutes ---- yet it will live on forever in our memories. We want to thank the NASA family and people from around the world for their incredible outpouring of love and support. Although we grieve deeply, as do the families of Apollo 1 and Challenger before us, the bold exploration of space must go on. Once the root cause of this tragedy is found and corrected, the legacy of Columbia must carry on --- for the benefit of our children and yours.

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