# SDR 2001UALA01667

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 12, 2001
- Submitted: September 12, 2001
- Operation: Air carrier
- Aircraft: N921UA
- Make and model: Boeing 737522
- Aircraft serial: 25388
- Aircraft time: 28,118 hours, 20,953 cycles
- Engine: Ge CFM56*
- System (JASC): [2701 · Control Column Section](https://openairdocs.org/jasc/2701)
- Part: Module
- Part number: 65C2552921
- Condition: Faulty
- Location: Control Column
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2001UALA01667

## Discrepancy

UNSCHEDULED LANDING DUE TO ELECTRICAL TRIM SYSTEM AND RELATED CIRCUIT BREAKER PROBLEMS. REPLACED COLUMN CUTOUT SWITCHING MODULE.

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