# SDR 2001UALA00140

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 22, 2001
- Submitted: March 7, 2001
- Operation: Air carrier
- Aircraft: [N909UA](https://openairdocs.org/aircraft/N909UA), registered now
- Make and model: Boeing 737522
- Aircraft serial: 25009
- Aircraft time: 28,829 hours, 18,526 cycles
- Engine: Ge CFM56*
- System (JASC): [5270 · Door Warning System](https://openairdocs.org/jasc/5270)
- Part: Proximity Switch
- Condition: Failed
- Location: L1 Door
- 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/2001UALA00140

## Discrepancy

DIVERTED DUE TO THE DOOR 1L WARNING LIGHT ILLUMINATING.  *S/D*  ADJUSTED GUIDE ARM, DOOR STOP PINS, AND DOOR INDICATION SWITCH.  ALSO FOUND A BAD DOOR PROXIMITY SWITCH.  REPLACED THE SWITCH.  OPS CHECKED GOOD.

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