# SDR AALA202507088422

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 3, 2025
- Submitted: July 8, 2025
- Operation: Air carrier
- Aircraft: [N977NN](https://openairdocs.org/aircraft/N977NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 31225
- Aircraft time: 29,346 hours, 12,568 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Acm
- Part number: 22064002
- Part serial: 7119
- Condition: Failed
- Location: Zone 100
- Part time: 69,750 hours, 29,368 cycles
- Stage of operation: CL
- 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/AALA202507088422

## Discrepancy

AIRCRAFT WAS GROUNDED: SMOKE AND FUME IN FLIGHT DECK REACHING 15,000FT IN CONJUNCTION WITH A LEFT PACK FAIL AFTER TAKEOFF. REMOVED AND REPLACED (ACM)-AIR CYCLE MACHINE. PER AMM 21-51-04. OPERATIONAL CHECKED GOOD.

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