# SDR ASAA2017032820287

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 28, 2017
- Submitted: March 30, 2017
- Operation: Air carrier
- Aircraft: [N597AS](https://openairdocs.org/aircraft/N597AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35689
- Aircraft time: 34,121 hours, 10,535 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Control Valve
- Part number: 3989085
- Part serial: 24520
- Condition: Failed
- Location: Lt A/C Pack
- Part time: 6,195 hours, 2,035 cycles
- Stage of operation: NR
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017032820287

## Discrepancy

CONTROL CAB ZONE TEMP LIGHT ILLUMINATED.  EXTINGUISHED WHEN MASTER CAUTION SYSTEM IS RESET.  ACFT GROUNDED. REMOVED & REPLACED FLIGHT DECK TRIM AIR VALVE IAW AMM 21-61-21. OPS & LEAK CHECKED GOOD.

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