# SDR AALA202502149856

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 13, 2025
- Submitted: February 14, 2025
- Operation: Air carrier
- Aircraft: [N973NN](https://openairdocs.org/aircraft/N973NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 31219
- Aircraft time: 28,742 hours, 12,249 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Duct
- Condition: Contaminated
- Location: Zone 100
- Stage of operation: DE
- 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/AALA202502149856

## Discrepancy

AIRCRAFT WAS GROUNDED: PACK ODOR DESCENDING THROUGH 8000 FEET TO TOUCHDOWN. MUSTY ODORIN COCKPIT ONLY NOT IN CABIN. ACCOMPLISHED JOB CARD 08L00021001 NO ODORS FOUND, ACCOMPLISHED A PRECAUTIONARY DECONTAMINATION OF THE AIR DUCTS. PER AMM 21-00-01.

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