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American Airlines Flight 1400 St. Louis, Missouri

American Airlines Flight 1400 St. Louis, Missouri. Lorenda Ward Investigator-in-Charge. History of Flight. At the gate, left engine would not start Manual start attempted and failed 2 nd manual start succeeded Shortly after takeoff

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American Airlines Flight 1400 St. Louis, Missouri

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  1. American Airlines Flight 1400 St. Louis, Missouri Lorenda Ward Investigator-in-Charge

  2. History of Flight • At the gate, left engine would not start • Manual start attempted and failed • 2nd manual start succeeded • Shortly after takeoff • Flight crew comments on the left engine air turbine starter valve (ATSV) light • Left engine fire warnings alerted • Declared emergency and returned to STL

  3. History of Flight • Go-around executed • Landed and stopped airplane on runway • Aircraft rescue and firefighting on-scene upon arrival • While on runway • Fuel inadvertently reintroduced to engine • Left engine fire warnings alerted • Passengers deplaned

  4. Investigative Findings • ATSV-air filter disintegrated • Cleaning procedures not followed • Damage not detected • Multiple previous engine no starts • Condition not recognized or addressed • ATSV manual override button internal pin bent • Flight crew delayed or did not complete checklists

  5. Safety Issues • ATSV-air filter replacement intervals • American Airlines’ CASS program deficiencies • Characteristics of the ATSV-Open light • Emergency task allocation guidance • Guidance and training on interrelationship between pneumatic crossfeed valves and engine fire handles

  6. Safety Issues • Multiple simultaneous emergencies training • Guidance on evacuation preparation on the ground • Communications between flight and cabin crews during emergency and unusual situations

  7. Parties to the Investigation • Federal Aviation Administration • American Airlines • Boeing Company • Pratt & Whitney • Honeywell • PTI Technologies, Inc. • Allied Pilots Association • Transportation Workers Union • Association of Professional Flight Attendants • Lambert-St. Louis International Airport

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