# SDR AALA20150228005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 28, 2015
- Submitted: March 2, 2015
- Operation: Air carrier
- Aircraft: [N840NN](https://openairdocs.org/aircraft/N840NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 33518
- Aircraft time: 15,411 hours, 5,896 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Condition: Faulty
- Location: Zone 100
- 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/AALA20150228005

## Discrepancy

AIR INTERRUPT, EMER DECLARED.  LANDING UNEVENTFUL & ACFT WAS OVERWEIGHT.  SMOKE IN COCKPIT AFTER TAKEOFF WHICH CEASED AFTER LT RECIRCULATION FAN WAS TURNED OFF.  REPLACED LT RECIRCULATION FAN IAW MM 21-25-02.  SYS CHECKED NORMAL.

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