# SDR AALA202609175758

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 14, 2026
- Submitted: September 17, 2026
- Operation: Air carrier
- Aircraft: [N169UW](https://openairdocs.org/aircraft/N169UW), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1455
- Aircraft time: 79,498 hours, 30,903 cycles
- System (JASC): [5270 · Door Warning System](https://openairdocs.org/jasc/5270)
- Part: Proximity Sensor
- Condition: Dirty
- Location: Zone 800
- Stage of operation: CL
- 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/AALA202609175758

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: ON CLIMB OUT FLIGHT ATTENDANT NOTIFIED THE FLIGHT CREW OF FLASHING CABIN PRESSURE LIGHT ON DOOR 1L WHICH SIMULTANEOUSLY ON THE DOOR SYSTEMS PAGE THE 1L DOOR SHOWED DISARMED WITH THE LEVER CONFIRMED IN THE ARMED POSITION - THE FLIGHT CREW REPORTED THAT THE CABIN PRESSURIZATION WAS NORMAL - WHILE AT CRUISE THE DOOR WAS AGAIN SHOWING ARMED AND THE LIGHT ON DOOR STOPPED FLASHING - MAINTENANCE CLEANED THE L1 DOOR PROXIMITY SENSOR AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK WITH NO FAULTS NOTED

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