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B737-800 flight crew reported a malfunction stab trim system during final approach. The crew completed all checklists and landed uneventfully.
| Attributes | |
| ACN | 1523825 |
| Time | |
| Date | 201803 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B737-800 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Elevator Trim System |
| Person 1 | |
| Function | Pilot Not Flying First Officer |
| Qualification | Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) |
| Person 2 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
On final approach to ZZZ; the stab out of trim light came on steady at 5;000 feet. The captain was flying. He disconnected the autopilot [only] to discover that the stab trim would not trim aft electrically. Both trim switches were tried and neither would trim aft electrically. The aircraft would trim manually in either direction. We identified as an emergency aircraft; completed all checklists and landed uneventfully.
Original NASA ASRS Text
Title: B737-800 flight crew reported a malfunction stab trim system during final approach. The crew completed all checklists and landed uneventfully.
Narrative: On final approach to ZZZ; the stab out of trim light came on steady at 5;000 feet. The captain was flying. He disconnected the autopilot [only] to discover that the stab trim would not trim aft electrically. Both trim switches were tried and neither would trim aft electrically. The aircraft would trim manually in either direction. We Identified as an emergency aircraft; completed all checklists and landed uneventfully.
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.