# SDR UALA2013052803642

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 26, 2013
- Submitted: May 28, 2013
- Operation: Air carrier
- Aircraft: N116UA
- Make and model: Boeing 747422
- Aircraft serial: 26908
- Aircraft time: 58,372 hours, 6,751 cycles
- Engine: Pwa PW4056
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Gasper Fan
- Part number: 732591F
- Part serial: 588
- Condition: Faulty
- Location: Cabin
- Stage of operation: CR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2013052803642

## Discrepancy

CREW REPORTS TEMP ISSUES ON B ZONE DUCT READING, APPROX. 120 DEG WHILE ALL OTHERS AT APPROX. 70-75.   ALSO, HAD ODOR IN FLT DECK SMELLED LIKE HOT AIR POSSIBLY BURNING PLASTIC. WORKED WITH CREW AND TURNED TRIM AIR OFF AND RESET ZONE SYS SEVERAL TIMES.  TEMPS STABILIZED.  ZONE B "DUCT" TEMP STILL READS APPROX 121.  SMELL HAS DISSIPATED.  WILL NEED TO ACCOMPLISH GROUND CKS OF SYS UPON ARRIVAL.  REPLACED GASPER FAN, OPS CHECK NORMAL.  NO SMELL FOUND.  ALL PACKS RAN 2 HOURS ON GROUND.

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