# SDR UALA2011022200906

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 21, 2011
- Submitted: March 1, 2011
- Operation: Air carrier
- Aircraft: [N544UA](https://openairdocs.org/aircraft/N544UA), registered now
- Make and model: Boeing 757222
- Aircraft serial: 25322
- Aircraft time: 72,613 hours, 20,914 cycles
- Engine: Pwa PW2040
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Part number: AXIMAXI1188AS
- Condition: Faulty
- Location: Cabin Air
- Stage of operation: NR
- How discovered: 9
- Nature of condition: E
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2011022200906

## Discrepancy

POSSIBLE BALLAST NOISE IN OVHD BAG AREA ROW 21DEF. MADE INOPERATIVE IAW MEL 2161J. VALVE CONFIRMED CLOSED, CB AND COLLARD. FOUND FAN IN AFT CABIN TRIM AIR TEMP SENSOR MAKING RUBBING NOISE.

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