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A B737-500 flight crew rejected their takeoff due to uncommanded stabilizer trim operation.
| Attributes | |
| ACN | 924631 |
| Time | |
| Date | 201012 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | B737-500 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Takeoff |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Elevator Trim System |
| Person 1 | |
| Function | Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
While crossing the hold short line after being cleared for takeoff; I noticed a small amount of forward trim being applied. After a few seconds this happened again. As we approached 80 KTS the trim moved forward again and I asked the first officer if he was applying the trim. He said no and that he thought it was me working the trim. At this time; the trim started to run full forward. I took the aircraft and rejected the takeoff. During this time; the stab out of trim light came on. We exited the runway; performed our checklists; and returned to the gate.
Original NASA ASRS Text
Title: A B737-500 flight crew rejected their takeoff due to uncommanded stabilizer trim operation.
Narrative: While crossing the hold short line after being cleared for takeoff; I noticed a small amount of forward trim being applied. After a few seconds this happened again. As we approached 80 KTS the trim moved forward again and I asked the First Officer if he was applying the trim. He said no and that he thought it was me working the trim. At this time; the trim started to run full forward. I took the aircraft and rejected the takeoff. During this time; the stab out of trim light came on. We exited the runway; performed our checklists; and returned to the 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.