B-52H 60-053 in February 2004 |
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| Accident summary | |
|---|---|
| Date | July 21, 2008 |
| Type | horizontal stabilizer malfunction |
| Site | Pacific Ocean northwest of Guam |
| Crew | 6 |
| Survivors | 0 |
| Aircraft type | B-52H Stratofortress |
| Aircraft name | Louisiana Fire |
| Operator | United States Air Force |
| Tail number | 60-053 |
The 2008 Guam B-52 crash was a fatal crash of a United States Air Force (USAF) B-52H Stratofortress on July 21, 2008. The aircraft, operating out of Andersen Air Force Base, crashed into the Pacific Ocean during a training flight approximately 30 nautical miles (56 km) northwest of Apra Harbor, Guam. The training flight was to include participation in a local municipal celebration of Liberation Day in Hagåtña. All six crew members aboard the aircraft were killed and the aircraft was destroyed.
An investigation by the USAF determined that the crash was likely caused by an improper stabilizer trim setting. The investigation was unable to determine conclusively what had caused the horizontal stabilizer trim to be set improperly, but theorized that the most likely cause was an aircraft system malfunction.
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On July 21, 2008, a United States Air Force (USAF) B-52H Stratofortress crashed into the Pacific Ocean approximately 30 nautical miles (56 km) northwest of Apra Harbor, Guam,[1] after taking off from Andersen Air Force Base.[2] The aircraft, named "Louisiana Fire" and with the mission call sign of "RAIDR 21", was about to participate in a flyover for the Liberation Day parade in Hagåtña. It crashed at 9:55 AM (local time), July 20); 5 minutes before they were scheduled to fly over the parade. Air traffic control radar images indicated that the aircraft appeared to be descending rapidly before disappearing from radar scopes at about 2,000 feet (610 m) of altitude.[3]
On July 23, 2008, the USAF announced that there were no survivors, and that the rescue effort had turned to a recovery mission for four still-missing members of the crew of six.[4]
The bomber, assigned to the 20th Bomb Squadron, was, with its crew, on temporary duty at Andersen as part of a four month rotation.[5] The bomber's unit had replaced Northrop Grumman B-2 Spirit bombers which had been grounded following the loss of one of them on February 23 that year.
The crew of RAIDR 21 were: Major Christopher M. Cooper (aircraft commander), Major Brent D. Williams, (radar navigator), Captain Michael K. Dodson, (co-pilot), First Lieutenant Joshua D. Shepherd (navigator), First Lieutenant Robert D. Gerren (electronic warfare officer), and Colonel George Martin. Martin was the deputy commander of 36th Medical Group at Andersen. The rest of the crew members were from the 20th Bomb Squadron or the 96th Bomb Squadron at Barksdale Air Force Base, Louisiana. While bodies and remains were recovered from the area, Dodson's and Gerren's remains were not recovered.[3][6] A memorial service for the crew was held at Arlington National Cemetery on November 14, 2008.[7][8]
The USAF worked with the United States Navy to map and retrieve the aircraft's wreckage from the ocean floor. The wreckage did not include a flight data recorder because the aircraft was not equipped with one.[9]
The accident investigation board concluded that the horizontal stabilizer was set at a down angle during the training mission. The cause of the mishap was an improper stabilizer trim setting. Due to the lack of available evidence, no surviving crew members, no radio calls, no other witnesses and lack of a data recorder, the accident investigation board was unable to determine by clear and convincing evidence why the stabilizer trim was mispositioned. The investigation board felt that the most likely cause of this runaway stabilizer trim was a system malfunction that would have led the stabilizer trim to improperly run in a nose-down direction. The improper trim setting occurred somewhere between 14,000 and 10,000 feet (3,000 m) and caused a rapid and uncontrollable descent the experienced crew could not overcome. Based on the descent profile of the mishap aircraft, there was only 34 seconds from the presumed start of the mishap sequence until impact.[10]
The board president, Brigadier General Mark Barrett explained that two factors led to the crash. The first was the "combination of low altitude with a descending left turn of the aircraft". The second was "the late recognition of the serious nature of the situation by the crew". He added, "any experienced air crew could have found it difficult to recognize, assess and recover from the rapidly developing situation involving the stabilizer trim setting." The USAF also conducted a separate safety investigation into the mishap but did not publicly release its findings.[6]