# SDR ASAA2013051094765

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 10, 2013
- Submitted: May 14, 2013
- Operation: Air carrier
- Aircraft: [N570AS](https://openairdocs.org/aircraft/N570AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35185
- Aircraft time: 24,137 hours, 7,200 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: Warning Light
- Condition: False Activation
- Location: Lt A/C Pack
- Stage of operation: AP
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2013051094765

## Discrepancy

LEFT PACK LIGHT CAME ON DURING RECALL ON APPROACH, EXTINGUISHES WHEN MASTER CAUTION SYS IS RESET.  ACFT GROUNDED.  LT PACK/ZONE TEMP CONTROLLER BITE TESTS PASS. NO HISTORY 30 DAYS.  REF MM 21-51-00.  LT TEMP CONTROLLER LOGGED TCV FAULT.  TCV LIGHT RESET.

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