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B747-400 flight crew experiences a jammed stabilizer climbing out of FL190. After consulting with maintenance control and troubleshooting with no improvement; an emergency is declared and the flight returns to the departure airport.
| Attributes | |
| ACN | 985472 |
| Time | |
| Date | 201112 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Aircraft 1 | |
| Make Model Name | B747-400 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Horizontal Stabilizer Trim |
| Person 1 | |
| Function | First Officer Pilot Not Flying |
| Experience | Flight Crew Last 90 Days 240 Flight Crew Total 19000 Flight Crew Type 7000 |
| Person 2 | |
| Function | Captain Pilot Flying Check Pilot |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 200 Flight Crew Total 13700 Flight Crew Type 2250 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
Climbing through approximately 19;000 ft; stab trim 2 and stab trim 3 and auto pilot EICAS messages appeared; completed checklist for EICAS messages. Called dispatch and maintenance control and used emergency authority to recycle circuit breakers with no help. Declared an emergency; dumped fuel and returned for landing. Exited runway; waited the required hour for brakes to cool; and was towed to gate.
Original NASA ASRS Text
Title: B747-400 flight crew experiences a jammed stabilizer climbing out of FL190. After consulting with Maintenance Control and troubleshooting with no improvement; an emergency is declared and the flight returns to the departure airport.
Narrative: Climbing through approximately 19;000 FT; stab trim 2 and stab trim 3 and auto pilot EICAS messages appeared; completed checklist for EICAS messages. Called Dispatch and Maintenance Control and used emergency authority to recycle circuit breakers with no help. Declared an emergency; dumped fuel and returned for landing. Exited runway; waited the required hour for brakes to cool; and was towed to gate.
Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.