# SDR AALA202608126345

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 10, 2026
- Submitted: August 12, 2026
- Operation: Air carrier
- Aircraft: [N973NN](https://openairdocs.org/aircraft/N973NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 31219
- Aircraft time: 32,801 hours, 14,046 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Acm
- Part number: 22064002
- Part serial: 2086
- Condition: Seized
- Location: Zone 100
- Part time: 35,973 hours, 15,474 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/AALA202608126345

## Discrepancy

AIRCRAFT WAS GROUNDED: FA'S REPORTED GRAY HAZY MODERATE SMOKE AND SMELL DURING THE LIFTOFF AROUND 1000FT. DECESION MAD TO DIVERT TO IAD AN EMERGENCY WAS DECLARED AND AIRCRAFT LANDED OVERWEIGHT WITHOUT INCIDENT. MAINTENANCE FOOUND AIR CYCLE MACHINE SEIZED AND REPLACED #2 ACM AND FLOW CONTROL SHUTOFF VALVE IAW AMM 21-51-01 AND AMM 21-51-04.

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