# SDR ASAA2022102240455

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 22, 2022
- Submitted: October 26, 2022
- Operation: Air carrier
- Aircraft: [N589AS](https://openairdocs.org/aircraft/N589AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35686
- Aircraft time: 54,013 hours, 15,883 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Modulating Valve
- Part number: 3989083
- Part serial: 1582
- Condition: Faulty
- Location: Left Ecs Bay
- Part time: 5,558 hours, 1,508 cycles
- Stage of operation: NR
- How discovered: V
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2022102240455

## Discrepancy

ZONE TEMP CONT CAB ILLUMINATED AFTER RECALL. GROUNDED - YES. REMOVED & REPLACED CONTROL CABIN TRIM AIR VALVE REF. B737-800 AMM 21-61-21.

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