# SDR REXA2017111301163

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 13, 2017
- Submitted: November 14, 2017
- Operation: Air carrier
- Aircraft: [N8960A](https://openairdocs.org/aircraft/N8960A), registered now
- Make and model: Cndair CL6002B19
- Aircraft serial: 7960
- Aircraft time: 26,890 hours, 24,497 cycles
- System (JASC): [2740 · Stabilizer Control System](https://openairdocs.org/jasc/2740)
- Part: Trim System
- Condition: Disengaged
- Location: Stab
- Stage of operation: NR
- 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/REXA2017111301163

## Discrepancy

STAB TRIM AND MACH TRIM CAUTION MESSAGE, DISENGAED AFTER TAKEOFF RESELECTED STAB TRIM & MACH TRIM BUT DISCONNECTED AGAIN. AUTO PILOT WAS NOT ABLE TO LEVEL THE AIRCRAFT AT 10'000 FT AND VIOLENTLEY DISENGAGED.  RAN QRH FOR STAB & MACH TRIM.  WERE ABLE TO RE-ENGAGE BOTH STAB & MACH AND AUTOPIOLT TO RETURN TO DEPARTURE.   HAD AP TRIM IS ND & AP PITCH TRIM CAUTION.  REMOVED AND REPLACED HSTCU IAW AMM 27-41-01. OPS CHECKED GOOD


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