# SDR ASAA2016120518939

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 5, 2016
- Submitted: December 9, 2016
- Operation: Air carrier
- Aircraft: [N461AS](https://openairdocs.org/aircraft/N461AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36363
- Aircraft time: 10,837 hours, 3,543 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Control Valve
- Part number: 3989085
- Part serial: 11203
- Condition: Failed
- Location: Lt A/C Pack
- Part time: 27,308 hours, 10,461 cycles
- Stage of operation: NR
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2016120518939

## Discrepancy

ON RECALL CONTROL CABIN LIGHT ILLUMINATED. EXTINGUISHED ON RESET.  ACFT GROUNDED.  REMOVED AND REPLACED FLIGHT DECK TRIM AIR MODULATING VALVE IAW AMM 21-61-21. PERFORMED BITE CHECK IAW AMM TASK 21-61-00, ALL GREEN, TEST PASSED. NO LEAKS NOTED.

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