# SDR ASAA2015022110711

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 21, 2015
- Submitted: February 23, 2015
- Operation: Air carrier
- Aircraft: [N533AS](https://openairdocs.org/aircraft/N533AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35201
- Aircraft time: 16,185 hours, 4,828 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Valve
- Part number: 3989084
- Part serial: 2159
- Condition: Failed
- Location: A/C Bay
- Part time: 65,076 hours, 35,860 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/ASAA2015022110711

## Discrepancy

ON PRESSING RECALL ON AFTER START CHECKLIST RT OVERHEAD AMBER LIGHT ILLUMINATED PACK LIGHT EXTINGUISHED PACK ON MASTER CAUTION RESET.  ACFT GROUNDED.  PERFORMED PACK/ZONE TEMP CONTROLLER BITE TEST REF MM TASK 21-61-00.  FOUND RT PACK TCV VALVE INOPERATIVE.  R & R RT PACK TEMP CONTOL VALVE REF MM 21-51-10.  OPS AND LEAK CHECK OK.

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