# SDR AALA202510036051

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 1, 2025
- Submitted: October 3, 2025
- Operation: Air carrier
- Aircraft: [N156AN](https://openairdocs.org/aircraft/N156AN), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6983
- Aircraft time: 28,751 hours, 11,475 cycles
- System (JASC): [5210 · Passenger/Crew Doors](https://openairdocs.org/jasc/5210)
- Part: Bottle
- Condition: Low Pressure
- Location: Zone 800
- 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/AALA202510036051

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: FOUND LOW PRESSURE ON R4 DOOR OPENING ASSIST BOTTLE. MAINTENANCE SERVICED ASSIST BOTTLE AT R4 DOOR IAW AMM 52-10-00.

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