# SDR ASAA2013070295452

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 2, 2013
- Submitted: July 5, 2013
- Operation: Air carrier
- Aircraft: [N570AS](https://openairdocs.org/aircraft/N570AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35185
- Aircraft time: 24,498 hours, 7,300 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Control Valve
- Part number: 3966081
- Part serial: 2635
- Condition: Inoperative
- Location: Rt A/C Pack
- Part time: 24,495 hours, 7,299 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2013070295452

## Discrepancy

RT A/C PACK ON /OFF DISCRETE SHOWS ON WITH PACK SWITCH OFF.  ACFT GROUNDED. REMOVED RT PACK FLOW CONTROL VALVE.  REMOVED ACM REINSTALL NEW FLOW CONTROL AND REINSTALL ACM REF AMM 21-51-01 AND AMM 21-51-04.  PERFORMED FLOW CONTROL VALVE INSTALLATION TEST AND ACM INSTALLATION TEST REF AMM 21-51-01 AND ACM TEST AMM 21-51-04 AND PERFORMED LEAK TEST AND BITE TEST REF AMM 21-61-00.  ACC TEST ARE GOOD AND BITE TEST OK.  NO LEAK NOTED.

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