# SDR ASAA2019041072891

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 7, 2019
- Submitted: April 10, 2019
- Operation: Air carrier
- Aircraft: [N570AS](https://openairdocs.org/aircraft/N570AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35185
- Aircraft time: 46,080 hours, 13,690 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Controller
- Condition: Malfunctioned
- Location: A/C Packs
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2019041072891

## Discrepancy

PRIMARY CONT CABIN ZONE TEMP LIGHT ON. GROUNDED - YES. CONT CABIN ZONE TEMP LIGHT ACTIVE ON RECALL, #2 PACK ZONE TEMP CONTROLLER SHOWS FLT DECK TRIM VALVE FOR PREVIOUS FLT, GREEN FOR VERIFY. RESET CONTROLLER, RAN PACKS, PZTC BITE SHOWS 3 GREEN BOTH CONTROLLERS REF B737-800 FIM 21-62 TASK 801.

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