# SDR UALA2009070701951

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 7, 2009
- Submitted: July 8, 2009
- Operation: Air carrier
- Aircraft: [N347UA](https://openairdocs.org/aircraft/N347UA), registered now
- Make and model: Boeing 737322
- Aircraft serial: 24251
- Aircraft time: 60,260 hours, 33,903 cycles
- Engine: Cfmint CFM563C1
- System (JASC): [2741 · Stabilizer Position Indicating](https://openairdocs.org/jasc/2741)
- Part: Module
- Part number: 65C2552921
- Part serial: 321
- Condition: Failed
- Location: Stab Trim
- Stage of operation: CL
- How discovered: O
- Nature of condition: O
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2009070701951

## Discrepancy

STAB TRIM PROBLEM, RTFL.  AFTER TAKEOFF STAB TRIM INOP IN NOSE DOWN POS.  RMV COLUMN SWITCH MODULE M1201, FOUND PUSHED BACK PIN ON K4 B2.  NEED TO CONTINUE T/S AFTER RPL OF M1201.  REPLACED COLUMN CUTOUT SWITCH MODULE.  ALSO REPLACED S115 NOSEUP LIMIT SWITCH.  CHECK GOOD NS UP, NS DOWN.  TEST FLT FOR STAB TRIM ALL CHECKS SATISFACTORY.

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