# SDR ASAA2019110331209

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 3, 2019
- Submitted: November 5, 2019
- Operation: Air carrier
- Aircraft: [N566AS](https://openairdocs.org/aircraft/N566AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35182
- Aircraft time: 48,940 hours, 14,608 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Warning System
- Condition: False Activation
- Location: Cockpit
- Stage of operation: NR
- 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/ASAA2019110331209

## Discrepancy

LEFT ZONE TEMP LIGHT ILLUMINATES ON RECALL. GROUNDED - YES. PERFORMED BITE TEST OF LEFT PACK ZONE TEMP CONTROLLER PER B737-800 AMM 21-61-00. NO FAULTS FOUND, OK FOR SERVICE.

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