# SDR AALA202506106042

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 4, 2025
- Submitted: June 10, 2025
- Operation: Air carrier
- Aircraft: [N933AN](https://openairdocs.org/aircraft/N933AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 30080
- Aircraft time: 63,101 hours, 26,420 cycles
- System (JASC): [2121 · Air Distribution Fan](https://openairdocs.org/jasc/2121)
- Part: Fan
- Part number: 6454052
- Part serial: 3659
- Condition: Failed
- Location: Recirculation
- Part time: 4,944 hours, 2,423 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/AALA202506106042

## Discrepancy

AIRCRAFT WAS GROUNDED: AIRCRAFT HAS SIGNIFICANT WOODY BURNT SMELL THROUGHOUT ENTIRE CABIN. **SUPPLEMENTAL REPORT FOR (AALA202506056042): REMOVE AND REPLACED LEFT HAND RECIRCULATION FAN (AALA202506056042), PER AMM 21-25-02. REMOVE AND REPLACED LEFT HAND RECIRCULATION FILTER (AALA202506104888), PER AMM 21-25-01. REMOVE AND REPLACED MAIN BATTERY (AALA202506106532), PER AMM 24-31-11. FOUND ODOR AT E AND E RACK MOISTURE SHROUDS, CLEANED MOISTURE SHROUDS (AALA202506104603), PER AMM 25-71-00. NO ODOR PRESENT AT THIS TIME**(CLOSED).

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