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B737 flight crew describes failure of electric nose up trim on departure. Manual trim operates normally and flight continues to destination at FL280.
| Attributes | |
| ACN | 818431 |
| Time | |
| Date | 200901 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| 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 | Pilot Flying First Officer |
| Experience | Flight Crew Last 90 Days 130 Flight Crew Type 2200 |
| Person 2 | |
| Function | Captain Pilot Not Flying |
| Experience | Flight Crew Last 90 Days 210 Flight Crew Type 9975 |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
During departure; the stabilizer trim failed to respond to electric nose-up trim inputs; however; it would trim nose down. The manual trim worked normally. We accomplished the stabilizer trim inoperative checklist and determined that we would not be able to engage the autopilot and would have to land flaps 15 degrees. We talked to maintenance control and they reported no history of stabilizer or trim problems on the aircraft and that there should be no problems continuing the flight. We then had dispatch compute a new flight plan fuel burn at FL280 and we determined we would have more than sufficient fuel to reach ZZZ at the lower altitude to remain out of rvsm airspace. We also had dispatch check our landing performance data to verify that there would be no problems for a non-normal landing with flaps 15 degrees and had then coordinate with approach control for a landing on runway xxl. Since we would be using a non-normal landing flap configuration with inoperative electric trim; we declared an emergency with center to have emergency equipment meet us and allow time to establish our landing configuration early. The captain briefed the flight attendants and passengers well before the top of descent and we landed without incident.
Original NASA ASRS Text
Title: B737 flight crew describes failure of electric nose up trim on departure. Manual trim operates normally and flight continues to destination at FL280.
Narrative: During departure; the STAB trim failed to respond to electric nose-up trim inputs; however; it would trim nose down. The manual trim worked normally. We accomplished the STAB Trim Inoperative checklist and determined that we would not be able to engage the autopilot and would have to land flaps 15 degrees. We talked to Maintenance Control and they reported no history of STAB or trim problems on the aircraft and that there should be no problems continuing the flight. We then had Dispatch compute a new flight plan fuel burn at FL280 and we determined we would have more than sufficient fuel to reach ZZZ at the lower altitude to remain out of RVSM airspace. We also had Dispatch check our landing performance data to verify that there would be no problems for a Non-Normal landing with flaps 15 degrees and had then coordinate with Approach Control for a landing on Runway XXL. Since we would be using a non-normal landing flap configuration with inoperative electric trim; we declared an emergency with Center to have emergency equipment meet us and allow time to establish our landing configuration early. The Captain briefed the flight attendants and passengers well before the top of descent and we landed without incident.
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.