# SDR DALA2025102307760

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 21, 2025
- Submitted: October 23, 2025
- Operation: Air carrier
- Aircraft: [N953DZ](https://openairdocs.org/aircraft/N953DZ), registered now
- Make and model: Boeing 737-9GPER
- Registry model: [Boeing 737-9GPER](https://openairdocs.org/model/boeing-737-9gper) (OpenAirDocs)
- Aircraft serial: 38739
- Aircraft time: 28,750 hours, 18,484 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Acm
- Part number: 22064002
- Part serial: 16093
- Condition: Seized
- Location: Left
- Part time: 17,629 hours, 9,977 cycles
- Stage of operation: CR
- 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/DALA2025102307760

## Discrepancy

SHIP 3953 -ATB/FUMES- RETURNED TO ATL DUE TO STRONG ODOR IN COCKPIT. CORRECTIVE ACTION: FOUND LEFT PACK ACM SEIZED. REPLACED SAME. OPS CHECK GOOD.

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