# SDR SWIA972233

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 31, 2000
- Submitted: January 2, 2001
- Operation: Air carrier
- Aircraft: [N412SW](https://openairdocs.org/aircraft/N412SW), registered now
- Make and model: Cndair CL6002B19
- Aircraft serial: 7101
- Aircraft time: 13,588 hours, 12,322 cycles
- Engine: Ge CF34*
- System (JASC): [2741 · Stabilizer Position Indicating](https://openairdocs.org/jasc/2741)
- Part: Switch
- Condition: Dirty
- Location: Cockpit
- Stage of operation: CR
- How discovered: O
- Nature of condition: F
- Precautionary procedure: H
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWIA972233

## Discrepancy

INFLIGHT THE FIRST OFFICERS STAB TRIM BECAME INOP (MORE DOWN TRIM ONLY) WITH AUTOPILOT ON.  THE AUTOPILOT WILL NOT DISENGAGE BY MOVING FIRST OFFICERS TRIM TO NOSE DOWN. REMOVED TRIM SWITCH FROM YOKE (FIRST OFFICERS).  SPRAYED CONTACT CLEANER TOP AND BOTTOM OF SWITCH OPS CHECK ONCE OUT OF YOKE OK.  OPS THREE TIMES AFTER INSTALL IN YOKE THREE TIMES WITHOUT FAIL.

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