# SDR AALA202405313443

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 30, 2024
- Submitted: May 31, 2024
- Operation: Air carrier
- Aircraft: [N853NN](https://openairdocs.org/aircraft/N853NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 31105
- Aircraft time: 40,961 hours, 17,361 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Part number: 6454052
- Part serial: 8743
- Condition: Shorted
- Location: Recirculation
- Part time: 11,556 hours, 5,384 cycles
- Stage of operation: NR
- 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/AALA202405313443

## Discrepancy

AIRCRAFT WAS GROUNDED: VERY STRONG BURNING ODOR DURING ENGINE STAR IN THE COCKPIT AND CABIN. ACCOMPLISHED J/C 08L00021001 (SMOKE ODOR FUMES INITIAL TROUBLESHOOTING) FOUND RIGHT RECIRCULATION FAN C/B POPED. REMOVE AND REPLACED RIGHT RECIRCULATION FAN. OPERTIONAL CHECK AND LEAK CHECK GOOD. PER AMM 21-25-02.

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