# SDR USAA2011090600004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 2, 2011
- Submitted: September 6, 2011
- Operation: Air carrier
- Aircraft: [N536UW](https://openairdocs.org/aircraft/N536UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 4025
- Aircraft time: 6,532 hours, 2,483 cycles
- System (JASC): [5210 · Passenger/Crew Doors](https://openairdocs.org/jasc/5210)
- Part: Cylinder
- Part number: FE240007
- Part serial: FR0304
- Condition: Low Pressure
- Location: L4 Door
- Part time: 6,532 hours, 2,483 cycles
- 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/USAA2011090600004

## Discrepancy

CHECK DOOR PRESSURE 4L DISPLAYED ON FLIGHT ATTENDANT PANEL.  MAINTENANCE SERVICED DOOR 4L EMERGENCY OPERATION CYLINDER.

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