# SDR ASAA2013052294888

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 22, 2013
- Submitted: May 29, 2013
- Operation: Air carrier
- Aircraft: [N532AS](https://openairdocs.org/aircraft/N532AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 36346
- Aircraft time: 11,507 hours, 3,533 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Control Valve
- Part number: 3989083
- Part serial: 1612
- Condition: Failed
- Location: Lt A/C Pack
- Part time: 62,146 hours, 35,048 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/ASAA2013052294888

## Discrepancy

LEFT PACK LIGHT ILLUMINATED ON RECALL, DURING LANDING CHECK. STAYED ON UNTIL PACK RESET.  ACFT GROUNDED.  TESTED THE LT PACK SYS IAW AMM 21-51-00-700-803.  PACK/ZONE CONTROLLER SHOWED A FAULT AT THE TCV.   RESET THE CONTROLLER AND RETESTED.  NO FAULTS INDICATED.  RAN THE PACKS THAN RETESTED, STILL NO FAULTS.  DUE TO RECENT HISTORY R & R TCV IAW AMM 21-51-10-400.  OPS AND LEAK CHECK GOOD.

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