# SDR AALA202211081286

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 7, 2022
- Submitted: November 8, 2022
- Operation: Air carrier
- Aircraft: [N924AN](https://openairdocs.org/aircraft/N924AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29525
- Aircraft time: 64,414 hours, 26,936 cycles
- System (JASC): [5270 · Door Warning System](https://openairdocs.org/jasc/5270)
- Part: Pseu
- Condition: Faulted
- Location: L1 Door
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202211081286

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: ON MULTIPLE OCCASIONS L1 DOOR WARNING CAME ON IN FLIGHT. ACCOMPLISHED PROXIMITY SWITCH ELECTRONICS UNIT (PSEU) BITE PROCEDURE PER AMM 32-09-00. FOUND PSEU INTERNAL FAULT. REPLACED PSEU PER AMM 32-09-10 AND ACCOMPLISHED SATISFACTORY OPERATIONAL TEST PER AMM 32-09-10. ACCOMPLISHED FIM 52-10-00-810-801 FOR L1 DOOR. NO FURTHER FAULTS FOUND.

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