Spanish investigators have yet to discover why the Spanair Boeing MD-82 that crashed in Madrid on Aug. 20, killing 154 people, was not correctly configured, or explain why no warning sounded during takeoff.
The first official release of information by Spain’s Civil Aviation Accident Investigation Commission (CIAIAC) says the flight data recorder shows the trailing-edge flaps were at zero degrees, while examination of actuators recovered from the wreckage indicates the leading-edge slats were retracted.
The CIAIAC preliminary report says the crew completed the normal checklists before takeoff, but investigators have yet to discover why the flaps and slats were not deployed and why the MD-82’s takeoff warning system did not provide aural warnings that the aircraft was not configured correctly for takeoff.
Taking off from Madrid-Barajas Airport’s runway 36L en route to Las Palmas with 172 passengers and crew, the MD-82 rotated at 154 knots, became airborne after a 1,950-meter ground run and climbed to 40 feet, pitching 18 degrees nose-up and stalling. The aircraft hit the ground tail and right wing-tip first and caught fire.
Anomalies noted by the report include an integrity problem with parameters transmitted to the digital flight data recorder from the number 2 digital flight guidance computer, which was active at the time of the crash. Affected parameters include slat position. This is still under investigation, says CIAIAC.
http://www.aviationweek.com
Fonte: Flight Safety Information 14/10/2008.
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