# SDR USAA2012091700011

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 15, 2012
- Submitted: September 17, 2012
- 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: 10,040 hours, 3,789 cycles
- System (JASC): [5210 · Passenger/Crew Doors](https://openairdocs.org/jasc/5210)
- Part: Cylinder
- Part number: FE240007
- Part serial: FR0297
- Condition: Defective
- Location: L4 Door
- Part time: 10,040 hours, 3,789 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA2012091700011

## Discrepancy

CIDS WARNING TO CHECK DOOR 4L SLIDE PRESSURE.  MAINTENANCE SERVICED 4L DOOR ASSIST BOTTLE PRESSURE.  TWO DAYS LATER ON 9/17/12, THE EMERGENCY CYLINDER WAS REPLACED DUE TO REPEATED SERVICINGS.

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