# SDR ASAA2017080121515

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 1, 2017
- Submitted: August 3, 2017
- Operation: Air carrier
- Aircraft: [N538AS](https://openairdocs.org/aircraft/N538AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 41188
- Aircraft time: 20,646 hours, 6,021 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Control Valve
- Part number: 693732478
- Part serial: D01935
- Condition: Erratic
- Location: Cockpit Temp
- Part time: 74,920 hours, 39,986 cycles
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2017080121515

## Discrepancy

CONTINUED REPORTS OF FLIGHT DECK TEMP CONTROL ERRATIC. ACFT GROUNDED. REMOVED AND REPLACED THE CABIN TEMP CONTROL MODULE IAW AMM 21-61-15, OPS CHECKED GOOD.

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