 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
B737 captain reported that stabilizer electric trim switches were not working; requiring manual trim to be used for landing.
| Attributes | |
| ACN | 1664376 |
| Time | |
| Date | 201907 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Takeoff |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Horizontal Stabilizer Trim |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Experience | Flight Crew Last 90 Days 127 Flight Crew Total 3104 Flight Crew Type 3104 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy |
Narrative:
Just after takeoff the first officer noticed the aircraft was not trimming with the electric trim switches. I tried my side which was not working either and verified that the electric trim cutout switches were closed and all circuit breakers were in. Manual trim was working fine. We ran the checklist and contacted dispatch and maintenance via airinc who had no other suggestions for us and we agreed that we would continue to ZZZ. The only hiccup and the main reason for the report is that when checking the non normal landing distance for a flaps 15 landing with no electric trim I could not find it for the -700. I did see one for the -800. We extrapolated from the existing performance numbers and asked dispatch to verify a landing distance which they did. We continued for an uneventful landing; but you might want to include that performance line for future flights.also; it just happened that the trim was in the proper position for takeoff so we never checked the electric trim before takeoff. We may want to add a quick check to that system during the preflight.
Original NASA ASRS Text
Title: B737 Captain reported that stabilizer electric trim switches were not working; requiring manual trim to be used for landing.
Narrative: Just after takeoff the FO noticed the aircraft was not trimming with the electric trim switches. I tried my side which was not working either and verified that the electric trim cutout switches were closed and all circuit breakers were in. Manual trim was working fine. We ran the checklist and contacted Dispatch and Maintenance via AIRINC who had no other suggestions for us and we agreed that we would continue to ZZZ. The only hiccup and the main reason for the report is that when checking the non normal landing distance for a flaps 15 landing with no electric trim I could not find it for the -700. I did see one for the -800. We extrapolated from the existing performance numbers and asked dispatch to verify a landing distance which they did. We continued for an uneventful landing; but you might want to include that performance line for future flights.Also; it just happened that the trim was in the proper position for takeoff so we never checked the electric trim before takeoff. We may want to add a quick check to that system during the preflight.
Data retrieved from NASA's ASRS site 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.