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Medium large transport crew declares an emergency, return land and overshoots assigned altitude after main electric trim failed shortly after takeoff.
| Attributes | |
| ACN | 162718 |
| Time | |
| Date | 199011 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : iah |
| State Reference | TX |
| Altitude | msl bound lower : 4000 msl bound upper : 5000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : iah |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : flight engineer pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 160 flight time total : 17000 flight time type : 160 |
| ASRS Report | 162718 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 210 flight time total : 5000 flight time type : 1000 |
| ASRS Report | 162732 |
| Events | |
| Anomaly | aircraft equipment problem : critical altitude deviation : overshoot non adherence : clearance |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : regained aircraft control flight crew : returned to intended course or assigned course flight crew : declared emergency |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
During takeoff and climb, primary longitudinal trim failed. Switched to alternate trim system. Went through 4000' assigned altitude during rapid climb. Declared emergency and returned to iah. During approach, slat disagree light was on during all flap settings for approach until after T/D. There was no abnormal roll or pitch tendencies from leading edge devices, just trim response.
Original NASA ASRS Text
Title: MLG CREW DECLARES AN EMERGENCY, RETURN LAND AND OVERSHOOTS ASSIGNED ALT AFTER MAIN ELECTRIC TRIM FAILED SHORTLY AFTER TKOF.
Narrative: DURING TKOF AND CLB, PRIMARY LONGITUDINAL TRIM FAILED. SWITCHED TO ALTERNATE TRIM SYS. WENT THROUGH 4000' ASSIGNED ALT DURING RAPID CLB. DECLARED EMER AND RETURNED TO IAH. DURING APCH, SLAT DISAGREE LIGHT WAS ON DURING ALL FLAP SETTINGS FOR APCH UNTIL AFTER T/D. THERE WAS NO ABNORMAL ROLL OR PITCH TENDENCIES FROM LEADING EDGE DEVICES, JUST TRIM RESPONSE.
Data retrieved from NASA's ASRS site as of July 2007 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.