# SDR ASAA2013102796242

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 27, 2013
- Submitted: October 29, 2013
- Operation: Air carrier
- Aircraft: [N408AS](https://openairdocs.org/aircraft/N408AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41732
- Aircraft time: 3,509 hours, 1,115 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Control Valve
- Part number: 3989083
- Part serial: 1612
- Condition: Malfunctioned
- Location: Lt A/C Pack
- Part time: 62,575 hours, 35,192 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/ASAA2013102796242

## Discrepancy

LEFT PACK LIGHT ILLUMINATED AFTER LANDING, MASTER CAUTION LIGHT DID NOT COME ON.  ACFT GROUNDED.  REPLACED LT PACK TEMP CONTROL VALVE REF MM 21-51-00.  OPS AND LEAK CKS NORMAL.

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