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Attributes | |
ACN | 1650637 |
Time | |
Date | 201905 |
Local Time Of Day | 1801-2400 |
Place | |
Locale Reference | ZZZ.Airport |
State Reference | US |
Environment | |
Flight Conditions | IMC |
Light | Night |
Aircraft 1 | |
Make Model Name | B737 Next Generation Undifferentiated |
Operating Under FAR Part | Part 121 |
Flight Phase | Climb |
Flight Plan | IFR |
Component | |
Aircraft Component | Horizontal Stabilizer Trim |
Person 1 | |
Function | Captain Pilot Flying |
Qualification | Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument |
Experience | Flight Crew Last 90 Days 145 Flight Crew Type 7740 |
Events | |
Anomaly | Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy Inflight Event / Encounter Loss Of Aircraft Control |
Narrative:
During initial climb out both the auto trim and electric trim switch worked ok. Approximately 2000 feet into the climb the electric up trip stopped working momentarily. Was intermittent a few times then stopped working completely. Electric nose down trim worked ok. Was the same on first officer (first officer) yoke as well. Noticed the auto trim not working also. Placed autopilot on momentarily to see if auto trim would work while ap (autopilot) engaged. It would not trim with different thrust settings or during an intermediate level off. Deselected autopilot and needed to manually trim nose up. Followed the QRH electric stabilizer trim inoperative procedure. No autopilot for duration of flight. Was able to manually trim both directions and continued flight per QRH. Called dispatch and maintenance to make sure there was nothing else we could do. Asked dispatch to give a heads up to [our destination] that we'll request runway xxl for the flaps 15 landing. Briefed a flaps 15 landing per the QRH. Advised approach control that we would like slightly longer final approach to configure early per QRH. They asked if we needed to declare an emergency. Told them not necessary as everything works ok; just can't use the autopilot and need to configure earlier than normal due to loss of electric trim. Everything went well and almost didn't need to configure early. The main reason for writing this is after having a discussion with several other pilots as to whether they would've handled this differently; all but one thought that this might fall under a loss of flight control and declaring an emergency may have been prudent as we are doing a nonstandard flaps 15 landing. Perhaps this is a gray area and I look forward to further feedback.
Original NASA ASRS Text
Title: B737 Captain reported a horizontal stabilizer electric trim failure on climbout.
Narrative: During initial climb out both the auto trim and electric trim switch worked ok. Approximately 2000 feet into the climb the electric up trip stopped working momentarily. Was intermittent a few times then stopped working completely. Electric nose down trim worked ok. Was the same on FO (First Officer) yoke as well. Noticed the auto trim not working also. Placed autopilot on momentarily to see if auto trim would work while AP (Autopilot) engaged. It would not trim with different thrust settings or during an intermediate level off. Deselected autopilot and needed to manually trim nose up. Followed the QRH ELECTRIC STABILIZER TRIM INOPERATIVE procedure. No autopilot for duration of flight. Was able to manually trim both directions and continued flight per QRH. Called Dispatch and Maintenance to make sure there was nothing else we could do. Asked Dispatch to give a heads up to [our destination] that we'll request Runway XXL for the flaps 15 landing. Briefed a flaps 15 landing per the QRH. Advised Approach Control that we would like slightly longer final approach to configure early per QRH. They asked if we needed to declare an emergency. Told them not necessary as everything works ok; just can't use the autopilot and need to configure earlier than normal due to loss of electric trim. Everything went well and almost didn't need to configure early. The main reason for writing this is after having a discussion with several other pilots as to whether they would've handled this differently; all but one thought that this might fall under a loss of flight control and declaring an emergency may have been prudent as we are doing a nonstandard flaps 15 landing. Perhaps this is a gray area and I look forward to further feedback.
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.