# SDR ASAA2021112836755

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 28, 2021
- Submitted: December 1, 2021
- Operation: Air carrier
- Aircraft: [N519AS](https://openairdocs.org/aircraft/N519AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 36482
- Aircraft time: 46,579 hours, 13,732 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Unknown
- Part number: UNKNOWN
- Condition: Unknown
- Location: Unknown
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2021112836755

## Discrepancy

REF T/C NG-21EA-23228-1, #1 PACK ZONE TEMP CONROLLER LOGGED "ZONE" TRIM VALVE FAULT DURING BITE TEST. GROUNDED - YES. ACCOMPLISHED B737-800 FIM 21-62 TASK 801, FAULT CLEARED.

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