# SDR CALA2026031314550

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 12, 2026
- Submitted: March 13, 2026
- Operation: Air carrier
- Aircraft: [N37324](https://openairdocs.org/aircraft/N37324), registered now
- Make and model: Boeing 737-8
- Registry model: [Boeing 737-8](https://openairdocs.org/model/boeing-737-8) (OpenAirDocs)
- Aircraft serial: 67604
- Aircraft time: 8,315 hours, 2,789 cycles
- System (JASC): [2210 · Autopilot System](https://openairdocs.org/jasc/2210)
- Part: Switch
- Part number: 251A44305
- Part serial: 1752
- Condition: Failed
- Part time: 8,315 hours, 2,789 cycles
- Stage of operation: CR
- How discovered: O
- Nature of condition: F
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026031314550

## Discrepancy

STAB OUT OF TRIM CAUTION IN FLIGHT PERFORMED FIM 22-11 TASK D72. MAINTENANCE MESSAGE 22-11830 SHOWS. REF FIM 22-11 TASK C17 FOR MESSAGE 22-11830, PERFORMED LIBRARY TESTS 60.32 AND 60.35. MAINTENANCE MESSAGE 22-11163 SHOWS FOR CHANNEL B ON BOTH TESTS. DURING CHANNEL B PORTION OF STAB TRIM COLUMN SWITCH TEST, BYPASSED THE COLUMN FORWARD PORTION OF TEST. REMOVED ONLY F/O COLUMN CUTOUT SWITCH REF. AMM 27-41-51-000-801 P/N 251A4430-5 AND S/N 1752 INSTALLED COLUMN CUTOUT SWITCH REF AMM 27-41-51-400-801 , AMM 22-11-00-740-804 OPS CHECKS GOOD LAND VERIFY PASSED AIRCRAFT RETAINS CAT STATUS.

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