# SDR ASAA2020011531863

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 13, 2020
- Submitted: January 16, 2020
- Operation: Air carrier
- Aircraft: [N517AS](https://openairdocs.org/aircraft/N517AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35197
- Aircraft time: 42,360 hours, 12,513 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Warning System
- Condition: False Activation
- Location: Cockpit
- Stage of operation: NR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2020011531863

## Discrepancy

CAB ZONE TEMP LIGHT ILLUMINATES ON RECALL GOES OUT ON RESET. GROUNDED - YES. CK OF PACK TEMP CONTROLLER FOUND LATCHED FAULT ON NR 2 PACK TEMP CONTROLLER FLT DECK TRIM VALVE. SUBSEQUENT BITE TEST PASSED - OPS CK OF PACK SYS & TRIM AIR NML. LITE EXTINGUISHED. OPS CK NML PER AMM 21-61-00.

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