# SDR ASAA2017090921857

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 9, 2017
- Submitted: September 11, 2017
- Operation: Air carrier
- Aircraft: [N566AS](https://openairdocs.org/aircraft/N566AS), registered now
- Make and model: Boeing 737890
- Aircraft serial: 35182
- Aircraft time: 40,974 hours, 12,270 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Warning Light
- Condition: False Activation
- Location: Temp Controller
- Stage of operation: TX
- 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/ASAA2017090921857

## Discrepancy

AFTER ENGINE START,  MASTER CAUTION RECALL AIR CONDITIONER WITH ZONE TEMP LIGHT ILLUMINATED.  ACFT GROUNDED. IAW AMM 21-62-801, PERFORMED BITE CHECK OF BOTH PACKS TEMP CONTROLLERS, CLEARED ALL FAULTS, LIGHT EXTINGUISHED AND SYSTEM NOW OPS NORMAL.

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