# SDR ASAA2018012723295

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 27, 2018
- Submitted: January 29, 2018
- Operation: Air carrier
- Aircraft: [N433AS](https://openairdocs.org/aircraft/N433AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41704
- Aircraft time: 16,948 hours, 5,569 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Control Valve
- Part number: 32902061
- Part serial: 632
- Condition: Failed
- Location: Standy Temp
- Part time: 58,775 hours, 37,196 cycles
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2018012723295

## Discrepancy

RIGHT STBY TEMP CONTROL VALVE FAILED AN OPS TEST IAW AMM 21-51-11-400-801.  ACFT GROUNDED.  REMOVED AND REPLACED THE RT TEMP STANBY CONTROL VALVE IAW AMM 21-51-11. OPS TESTED GOOD.

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