# SDR 2007UALA00352

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 7, 2007
- Submitted: February 14, 2007
- Operation: Air carrier
- Aircraft: [N402UA](https://openairdocs.org/aircraft/N402UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 439
- Aircraft time: 43,862 hours, 16,170 cycles
- Engine: Iae V2527A5
- System (JASC): [5270 · Door Warning System](https://openairdocs.org/jasc/5270)
- Part: Proximity Switch
- Condition: Faulty
- Location: Door
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2007UALA00352

## Discrepancy

DOOR 1 ARMS, BUT WILL NOT INDICATE ARMED ON COCKPIT.  [SUP 05-08-07]  FAULT TRACED TO OUT OF ADJUSTMENT PROXIMITY SWITCH. MORE SPECIFICALLY, A LOOSE LOCK WASHER ON THE PROXIMITY TARGET. REPLACED LOCK WASHER AND READJUSTED PROXIMITY SWITCH TO PROPER CLEARANCE.

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