# SDR USAA2013030400009

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 3, 2013
- Submitted: March 5, 2013
- Operation: Air carrier
- Aircraft: [N539UW](https://openairdocs.org/aircraft/N539UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 4082
- Aircraft time: 11,479 hours, 4,322 cycles
- System (JASC): [5240 · Service Doors](https://openairdocs.org/jasc/5240)
- Part: Diaphragm
- Part number: FE240221001
- Condition: Broken
- Location: R4 Door
- 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/USAA2013030400009

## Discrepancy

C11 CHECK - R4 DOOR DAMPER CYLINDER PRESSURE DEPLEATED.  REPLACED R4 DOOR DAMPER DIAPHRAM & EMERGENCY OPERATION CYLINDER SHEAR PIN IAW A321 AMM 52-13-14 PB 401 & SERVICE NITROGEN AIR IAW A321 AMM 52-10-00-014-001-A

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