# SDR CHQA200700020

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 31, 2007
- Submitted: May 31, 2007
- Operation: Air carrier
- Aircraft: N471SM
- Make and model: Cndair CL6002B19
- Aircraft serial: 7613
- Aircraft time: 12,723 hours, 11,460 cycles
- System (JASC): [2741 · Stabilizer Position Indicating](https://openairdocs.org/jasc/2741)
- Part: Switch
- Condition: Dirty
- Location: Horiz Stab
- Stage of operation: CL
- How discovered: O
- Nature of condition: F
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CHQA200700020

## Discrepancy

FLIGHT 3332 - PVD-CLE - ON CLIMB-OUT AROUND 2000 AGL, FO WAS HAND FLYING, RECEIVED STAB TRIM AND MACH TRIM FAIL MESSAGES. TRIM WOULD NOT RE-ENGAGE. TRIM FAILED AT 5.8 UNITS. DECLARED AN EMERGENCY AND PROCEEDED IMMEDIATELY BACK TO PVD FOR OVERWEIGHT LANDING.  MAINTENANCE CLEANED SWITCHES, RESET HSCU AND MACH TRIM.  OPERATION FLIGHT WAS GOOD.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.