# SDR AALA202511284843

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 27, 2025
- Submitted: November 28, 2025
- Operation: Air carrier
- Aircraft: [N186US](https://openairdocs.org/aircraft/N186US), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1701
- Aircraft time: 76,087 hours, 29,705 cycles
- System (JASC): [5210 · Passenger/Crew Doors](https://openairdocs.org/jasc/5210)
- Part: Diaphragm
- Part number: FE240221001
- Condition: Leaking
- Location: Zone 800
- Component: Bottle, Ratier
- Component part number: FE240006
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202511284843

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: L4 DOOR DAMPER AND EMERGENCY OPERATION CYLINDER PRESSURE AT 0 PSI, MAINTENANCE CONFIRMED THE DAMPER AND EMERGENCY OPERATION CYLINDER WAS LEAKING AND REPLACED THE DIAPHRAGM IN THE PERCUSSION MECHANISM OF THE DAMPER AND EMERGENCY OPERATION CYLINDER PER AMM 52-10-00. A SATISFACTORY LEAK CHECK WAS ACCOMPLISHED WITH NO ISSUES NOTED.

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