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A canadair CL65 in climb at 12000 ft attempts to leveloff with nose down trim. Nose pitches further than required and excessive trim warning sounds. Flight diverts.
| Attributes | |
| ACN | 588222 |
| Time | |
| Date | 200307 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | msl single value : 12000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zzz.artcc tower : svmi.tower |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet CL65, Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 4835 flight time type : 2081 |
| ASRS Report | 588222 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : pitch trim aural warning other flight crewa other flight crewb |
| Resolutory Action | flight crew : overcame equipment problem flight crew : diverted to another airport |
| Consequence | other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Chart Or Publication Aircraft |
| Primary Problem | Aircraft |
Narrative:
250 KT in climb (captain PF) at approximately 12000 ft. ATC assigns normal speed. Captain (PF) lowering and trimming nose down for speed increase to 290 KTS. Nose pitching farther than required. Trim warbler (excessive trim) sounds. PF complies with immediate action memory items, calls for QRH. QRH compiled with. Contact company dispatch and maintenance. Jointly agree to return to ZZZ. Advise maintenance of overweight landing and complied with necessary company paper upon return. Landing uneventful no emergency declared. Callback conversation with reporter revealed the following information: the reporter states the cause of the excessive rate and amount of pitch trim is unknown as maintenance does not report the action taken to the flight crews.
Original NASA ASRS Text
Title: A CANADAIR CL65 IN CLB AT 12000 FT ATTEMPTS TO LEVELOFF WITH NOSE DOWN TRIM. NOSE PITCHES FURTHER THAN REQUIRED AND EXCESSIVE TRIM WARNING SOUNDS. FLT DIVERTS.
Narrative: 250 KT IN CLB (CAPT PF) AT APPROX 12000 FT. ATC ASSIGNS NORMAL SPD. CAPT (PF) LOWERING AND TRIMMING NOSE DOWN FOR SPD INCREASE TO 290 KTS. NOSE PITCHING FARTHER THAN REQUIRED. TRIM WARBLER (EXCESSIVE TRIM) SOUNDS. PF COMPLIES WITH IMMEDIATE ACTION MEMORY ITEMS, CALLS FOR QRH. QRH COMPILED WITH. CONTACT COMPANY DISPATCH AND MAINT. JOINTLY AGREE TO RETURN TO ZZZ. ADVISE MAINT OF OVERWT LNDG AND COMPLIED WITH NECESSARY COMPANY PAPER UPON RETURN. LNDG UNEVENTFUL NO EMER DECLARED. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATES THE CAUSE OF THE EXCESSIVE RATE AND AMOUNT OF PITCH TRIM IS UNKNOWN AS MAINT DOES NOT RPT THE ACTION TAKEN TO THE FLT CREWS.
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.