# SDR ASAA1057752

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 20, 2010
- Submitted: April 26, 2010
- Operation: Air carrier
- Aircraft: [N557AS](https://openairdocs.org/aircraft/N557AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35176
- Aircraft time: 14,745 hours, 4,305 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Unknown
- Condition: Malfunctioned
- Location: Ac Bay
- Stage of operation: TX
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA1057752

## Discrepancy

LEFT PACK LIGHT ILLUMINATED ON RECALL DURING LANDING CHECKLIST.  VERIFIED ISSUE.  BITE SHOWS TCV FAULT ON NR 1 ZONE TEMP CONTROLLER.  BITE OF CONTROLLER RESETS FAULT.  GROUND VERIFICATION CHECKS NORMAL REF AMM 21 61 20.

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