# SDR ASAA2020020332066

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 3, 2020
- Submitted: February 5, 2020
- Operation: Air carrier
- Aircraft: [N407AS](https://openairdocs.org/aircraft/N407AS), registered now
- Make and model: Boeing 737-900ER
- Registry model: [Boeing 737-900ER](https://openairdocs.org/model/boeing-737-900er) (OpenAirDocs)
- Aircraft serial: 41731
- Aircraft time: 28,705 hours, 9,100 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Warning Light
- Condition: False Activation
- Location: Fwd Cabin Temp
- Stage of operation: NR
- 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/ASAA2020020332066

## Discrepancy

FWD CAB ZONE TEMP ILLUMINATED ON MASTER RECALL, EXTINGUISHES WITH RESET OF MASTER CAUTION. GROUNDED - YES. PERFORMED PACK/ZONE TEMP CONT BITE PER B737-900 AMM 21-50-00-700-803, OPS CHECK GOOD, FWD CAB ZONE TEMP LIGHT EXTINGUISHED DURING RECALL.

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