# SDR ASAA2020013082018

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 28, 2020
- Submitted: January 31, 2020
- Operation: Air carrier
- Aircraft: [N585AS](https://openairdocs.org/aircraft/N585AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35683
- Aircraft time: 46,954 hours, 14,078 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Warning Light
- Condition: False Activation
- Location: Cockpit Temp
- Stage of operation: TX
- 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/ASAA2020013082018

## Discrepancy

ON PUSHBACK, CONTROL CABIN ZONE TEMP LIGHT ILLUMINATED,  EXTINGUISHED WITH MASTER CAUTION RESET.  GROUNDED - YES. REL PER MEL 21-21G FLIGHT DECK ZONE PRIMARY TEMP CONT INOP. ENROUTE MEL - #2 ZONE TEMP CONT LOGGED TRIM AIR VALVE FAULT FLT DECK.  FAULT CLEARED & CHECKED NORMAL IAW AMM 21-61-00,  RAN PACK,  OPS NORMAL. GROUND VERIFICATION SUCCESSFUL.

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