# SDR AALA202409055815

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 4, 2024
- Submitted: September 5, 2024
- Operation: Air carrier
- Aircraft: [N822NN](https://openairdocs.org/aircraft/N822NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 31085
- Aircraft time: 43,751 hours, 18,354 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Part number: 6454052
- Part serial: 8743
- Condition: Faulty
- Location: Zone 100
- Part time: 11,556 hours, 5,384 cycles
- Stage of operation: TO
- 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/AALA202409055815

## Discrepancy

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: AFTER TAKE OFF SMELLED BURNING ODOR IN FLIGHT DECK AND CABIN; AIRCRAFT AIR INTERRUPTED BACK TO AND LANDED SAFELY AT MIA. FOUND LEFT HAND RECIRCULATION FAN FAULTY. REMOVE AND REPLACED LEFT HAND RECIRCULATION FAN. PER AMM 21-25-02.

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