# SDR AALA202511183549

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 16, 2025
- Submitted: November 18, 2025
- Operation: Air carrier
- Aircraft: [N171US](https://openairdocs.org/aircraft/N171US), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1465
- Aircraft time: 79,128 hours, 30,673 cycles
- System (JASC): [5270 · Door Warning System](https://openairdocs.org/jasc/5270)
- Part: Pressure Switch
- Part number: 1266100
- Part serial: 3555
- Condition: Faulted
- Location: Zone 800
- Part time: 94,690 hours, 18,556 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202511183549

## Discrepancy

AIRCRAFT WAS GROUNDED: AFT LEFT EXIT DOOR INTERMITTENTLY SHOWS PRESSURE LIGHT AND PRESSING DOWN ON ARMING HANDLE WILL MAKE LIGHTS GO OUT.  MAINTENANCE REPLACED CABIN PRESSURE SWITCH AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 52-73-12 WITH NO ISSUES NOTED.

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