# SDR ASAA201902047996

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 30, 2019
- Submitted: February 4, 2019
- Operation: Air carrier
- Aircraft: [N570AS](https://openairdocs.org/aircraft/N570AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35185
- Aircraft time: 45,708 hours, 13,580 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Valve
- Part number: 3989085
- Part serial: 22585
- Condition: Failed
- Location: Left Ecs Bay
- Part time: 16,656 hours, 5,355 cycles
- Stage of operation: NR
- 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/ASAA201902047996

## Discrepancy

LEFT PACK ZONE TEMP ILLUMINATES ON RECALL. GROUNDED - YES. REMOVED AND REPLACED LH (FLT DECK) ZONE TRIM AIR VALVE. REF AMM 21-61-21. OPS CHK GOOD.

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