# SDR AALA202502177679

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 12, 2025
- Submitted: February 17, 2025
- Operation: Air carrier
- Aircraft: [N971AN](https://openairdocs.org/aircraft/N971AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29547
- Aircraft time: 64,300 hours, 27,490 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Acm
- Part number: 22064002
- Part serial: 7619
- Condition: Uncontrollable
- Location: Zone 100
- Part time: 40,924 hours, 17,463 cycles
- Stage of operation: NR
- How discovered: O
- Nature of condition: G, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202502177679

## Discrepancy

AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: UNABLE TO CONTROL AFT CABIN TEMPERATURE, WHILE RIGHT PACK ON, AFT CABIN WAS EXCESSIVELY HOT, UNTIL RIGHT PACK SHUT DOWN; AIRCRAFT DIVERTED TO AND LANDED SAFELY AT DFW.   REMOVED AND REPLACED RIGHT ACM. PER AMM 21-51-04. OPERTIONAL CHECK GOOD.

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