# SDR ASAA2015010610160

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 6, 2015
- Submitted: January 12, 2015
- Operation: Air carrier
- Aircraft: [N558AS](https://openairdocs.org/aircraft/N558AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35177
- Aircraft time: 32,714 hours, 9,637 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Valve
- Part number: 3989083
- Part serial: 723C
- Condition: Failed
- Location: A/C Bay
- Part time: 71,059 hours, 35,019 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/ASAA2015010610160

## Discrepancy

DURING RECALL, CONTROLLER CABIN ZONE TEMP LIGHT ILLUMINATED.  ACFT GROUNDED. R & R CONTROLLER CABIN TRIM AIR MODULATING VALVE IAW AMM 21-61-21-000-801/-400-801.  OPS AND LEAK CKS GOOD.

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