# SDR ASAA12511078

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 11, 2012
- Submitted: February 13, 2012
- Operation: Air carrier
- Aircraft: [N518AS](https://openairdocs.org/aircraft/N518AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35693
- Aircraft time: 11,316 hours, 3,431 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Warning System
- Condition: False Activation
- Location: Cockpit
- Stage of operation: TX
- How discovered: O
- Nature of condition: N
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA12511078

## Discrepancy

CONTROL CABIN ZONE TEMP ILLUMINATED ON MASTER CAUTION RECALL.  EXTINGUISHES WHEN RESET.  PERFORMED PACK/ZONE TEMP CONTROLLED BIT TEST & OPS CHECK GOOD IAW B737NG AMM 21 51 00 700 803.  RAN ENGINES AND OPERATED PACKS SHUT DOWN ENGINES AND PERFORMED PACK/ZONE TEMP CONTROLLER BIT TEST OPS CHECKS GOOD IAW B737NG AMM 21 51 00 700 803.

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