# SDR ASAA2021070235234

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 2, 2021
- Submitted: July 7, 2021
- Operation: Air carrier
- Aircraft: [N486AS](https://openairdocs.org/aircraft/N486AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44107
- Aircraft time: 21,572 hours, 6,911 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Warning Message
- Condition: False Activation
- Location: Cockpit Temp
- Stage of operation: NR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021070235234

## Discrepancy

"CONT CAB" TEMP CONTROLLER ZONE TEMP LIGHT. LIGHT GOES OUT WHEN MASTER CAUTION PUSHED. GROUNDED - YES. PZTC #2 FAULTED FLIGHT DECK TRIM VALE, RESET FAULT & OPS BOTH PACKS FOR 20 MINUTES, RECALL TEST PASSED NO FAULTS NOTED, B737-900 AMM 21-00-00 & AMM 21-51-00-700-803.

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