# SDR SWIA202266621

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 21, 2022
- Submitted: October 24, 2022
- Operation: Air carrier
- Aircraft: [N873AS](https://openairdocs.org/aircraft/N873AS), registered now
- Make and model: Cndair CL6002B19
- Aircraft serial: 7549
- Aircraft time: 40,445 hours, 39,433 cycles
- System (JASC): [2200 · Auto Flight System](https://openairdocs.org/jasc/2200)
- Part: None
- Condition: Warning Message
- Stage of operation: TO
- How discovered: O
- Nature of condition: J
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWIA202266621

## Discrepancy

MACH TRIM AND STAB TRIM CAUTION MESSAGES ON TAKEOFF. WOULD NOT RE-ENGAGE NORMALLY. SELECTED STAB TRIM DISCONNECT BUTTON. BOTH TRIMS ENGAGED AFTERWARDS.   (FLIGHT #4312 FILED CLOSED)   COMPLIED WITH FAULT ISOLATION PROCEDURE FOR STAB TRIM MACH TRIM CAUTION MESSAGES PER CRJ 200 FIM 27-40-00.FOUND LABEL 273 BIT 13 SET IN HSTCU DIAGNOSTIC DATA. PERFORMED GROUND MAINTENANCE TEST  PER CRJ 200 AMM 27-41-00. VERIFIED FAULT IS NOT A LATCHED FAULT AND CLEARED UPON COMPLETION OF GROUND MAINTENANCE TEST. PERFORMED OPERATIONAL TEST OF STAB TRIM AND MACH TRIM ENGAGE SWITCH PER CRJ 200 AMM 27-41-25. OPERATIONAL TEST GOOD. PERFORMED WITH FLAPS IN TAKE OFF POSITION. DIAGNOSTIC DATA CONFIRMED NO FAULTS POST OPERATIONAL TEST. A/C OK FOR CONTINUED SERVICE.

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