# SDR ASAA2022071439141

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 14, 2022
- Submitted: July 21, 2022
- Operation: Air carrier
- Aircraft: [N487AS](https://openairdocs.org/aircraft/N487AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44108
- Aircraft time: 24,914 hours, 7,690 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Control Valve
- Condition: Faulted
- Location: Rt A/C Pack
- Stage of operation: DE
- 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/ASAA2022071439141

## Discrepancy

AFTER ENGINE START + MC RECALL, R PACK LIGHT WOULD NOT EXTINGUISH. RIGHT PACK ILLUMINATED ON RECALL AT TOP OF DESCENT, LIGHT EXTINGUISHED WITH MASTER CAUTION RESET. REF ASA L/P 60493842. GROUNDED - YES.   REMOVED AND REPLACED TEMP CONTROL VALVE REF. B737-900 AMM 21-51-10.

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