# SDR ASAA2018112637052

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 23, 2018
- Submitted: November 27, 2018
- Operation: Air carrier
- Aircraft: [N519AS](https://openairdocs.org/aircraft/N519AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 36482
- Aircraft time: 37,664 hours, 11,257 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Valve
- Condition: Faulted
- Location: Cockpit Temp
- Stage of operation: TX
- 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/ASAA2018112637052

## Discrepancy

CONT CAB ZONE TEMP LIGHT ILLUMINATED DURING MASTER CAUTION RECAL AFTER ENGINE START CHECK LIST. QRH PROCEDURES ACCOMPLISHED VERIFIED BACK UP OPS NORMAL, OCCURED ZERO MORE ENROUTE. GROUNDED - YES. ACCOMPLISHED PACK TEMP CONTROL BITE IAW B737-800 FIM 21-61 TASK 801. FOUND FLT DECK TRIM AIR VALVE FAULT ON PREVIOUS LEG. FLT DECK TRIM AIR VALVE OPS CHECK GOOD IAW FIM 21-62- TASK 832.

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