# SDR IPXA09M55972

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 21, 2009
- Submitted: May 22, 2009
- Operation: Air carrier
- Aircraft: [N291UP](https://openairdocs.org/aircraft/N291UP), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48477
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Condition: Burned
- Location: E/E Bay
- Stage of operation: AP
- 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/IPXA09M55972

## Discrepancy

ON APPROACH, BURNING SMELL IN COCKPIT ACCOMPANIED BY AN UNUSUAL FAN SOUND.  ON TAXI, IN LEVEL 2 AVIONICS EXHAUST FLOW OFF ILLUMINATED.  AVIONICS COMPARTMENT EXHAUST FAN INOP.  ITEM DEFERRED AS PER MEL 21-26 -2.  DMP 21-26-2 PERFORMED.  GROUND TIME NOT TO EXCEED 2.5 HOURS UNLESS AVIONICS LOAD IS REDUCED.  SEE MEL 21-26-2.

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