# SDR AALA20110401TUL05

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 1, 2011
- Submitted: April 6, 2011
- Operation: Air carrier
- Aircraft: [N913AN](https://openairdocs.org/aircraft/N913AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29514
- Aircraft time: 35,529 hours, 14,756 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Condition: Inoperative
- Location: Cabin
- Stage of operation: CR
- How discovered: O
- Nature of condition: P
- Precautionary procedure: G, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20110401TUL05

## Discrepancy

DAY - INFLIGHT DCA-ORD.  CREW REPORTED PRESSURIZATION PROBLEMS. CABIN OXYGEN MASKS WERE MANUALLY DEPLOYED.  EMERGENCY DECLARED DIVERTED DAY LANDED WITHOUT INCIDENT.  AIRCRAFT REMOVED FROM SERVICE.  REPLACED BOTH RECIRCULATION FANS.  RECIRCULATION FAN FILTERS WERE QUARANTINED FOR FURTHER TESTING.  SYSTEM GROUND CHECK NORMAL OPERATION.

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