# SDR CALA2011050600349

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 6, 2011
- Submitted: May 6, 2011
- Operation: Air carrier
- Aircraft: [N21723](https://openairdocs.org/aircraft/N21723), registered now
- Make and model: Boeing 737724
- Aircraft serial: 28790
- Aircraft time: 40,794 hours, 13,465 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Odor
- Location: Cockpit
- Stage of operation: CL
- How discovered: O
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2011050600349

## Discrepancy

APPROX 2000 FEET ELECTRICAL SMELL BURNING/HOT WAS DETECTED BY COCKPIT CREW & F/A FIRST CLASS.  OVENS WERE NOT IN OPS.  PERFORMED FIM 21-00-00-810-806.  NO FAULTS NOTED.  RUN BOTH ENGINES AT TAKEOFF POWER, BLEED ON PACKS ON, RECIRC FANS ON.  NO ODOR OR BURNING SMELL.  REPLACED RECIRC FAN FILTER.21-25-01.  A/C OK TO CONT.

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