# SDR FDEA200906102017

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 10, 2009
- Submitted: June 11, 2009
- Operation: Air carrier
- Aircraft: N571FE
- Make and model: Doug MD-10-10F
- Registry model: [Doug MD-10-10F](https://openairdocs.org/model/mcdonnell-douglas-md-10-10f) (OpenAirDocs)
- Aircraft serial: 47830
- Aircraft time: 75,213 hours, 24,151 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Part number: 29680
- Part serial: 924
- Condition: Odor
- Location: E/E Bay
- Part time: 2,676 hours, 1,279 cycles
- Stage of operation: CR
- 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/FDEA200906102017

## Discrepancy

WHILE IN CRUISE AT FL 340 HEARD A THUMPING NOISE  FROM THE RADOME OR AVIONICS COMP AREA.  ALMOST IMMEDIATELY STARTED DETECTING A BURNING ODOR.  COMPLIED WITH THE PHASE ONES AND QRH AND DIVERTED.  UPON ENTERING COCKPIT NOTICED NO VISIBLE SMOKE,  FOUND AVIONICS RACK FAN 3 CB POPPED. FOUND NR 3 AVIONICS FAN C/B POPPED UPON ENTERING COCKPIT.  NO PAST HISTORY.  REMOVED COVER TO INSPECT WIRING AT FAN AREA, NO DISCREPANCIES NOTED. OK FOR FLIGHT. MOCC NOTIFIED.  TRANS ITEM TO MEL.  R & R NR 3 AVIONICS COOLING FAN PER AMM 21-26-02-4   OPS CHECK GOOD, CIRCUIT BREAKER REMAINS CLOSED.

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