# SDR ASAA2015012910479

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 29, 2015
- Submitted: February 2, 2015
- Operation: Air carrier
- Aircraft: [N577AS](https://openairdocs.org/aircraft/N577AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35186
- Aircraft time: 30,159 hours, 9,062 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Control Valve
- Part number: 3989084
- Part serial: 1722
- Condition: Malfunctioned
- Location: Rt A/C Pack
- Part time: 67,415 hours, 36,105 cycles
- Stage of operation: TX
- 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/ASAA2015012910479

## Discrepancy

RIGHT PACK LIGHT ILLUMINATED ON RECALL AND EXTINGUISHES ON MASTER CAUTION RESET. ACFT GROUNDED.  REPLACED RT PACK TEMP CONTROL VALVE IAW AMM 21-51-10.  PERFORMED BITE CHECK ON RT PACK TEMP CONTROLLER IAW AMM 21-51-00 AND LEAK CHECK IAW AMM 21-51-10.  BITE CHECK AND LEAK CHECK GOOD.

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