# SDR ASAA2020122833779

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 28, 2020
- Submitted: December 30, 2020
- Operation: Air carrier
- Aircraft: [N564AS](https://openairdocs.org/aircraft/N564AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35103
- Aircraft time: 52,539 hours, 15,801 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: 9
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2020122833779

## Discrepancy

ZONE TEMP ILLUMINATED FOR CONT CAB, IT WENT OUT DURING MASTER CAUTION RESET.  GROUNDED-YES.  INSPECTED AND FOUND NR 2 PZTC WITH "FLT DECK TRIM VLV " FAULT LOGGED 1 TIME.  ACCOMPLISHED PZTC BITE, REF B737-800 AMM 21-61-00.  FAULT ABLE TO RESET.  GROUND RAN PACKS FOR HH, NO FAULTS RETURNED.  CLEANED FLT DECK FILTER.

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