# SDR ASAA2020012733958

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 23, 2020
- Submitted: January 28, 2020
- Operation: Air carrier
- Aircraft: [N433AS](https://openairdocs.org/aircraft/N433AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41704
- Aircraft time: 24,803 hours, 7,978 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Warning Light
- Condition: False Activation
- Location: Cockpit 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/ASAA2020012733958

## Discrepancy

FLT DECK PRIMARY TEMP (ZONE TEMP) LIGHT ILLUMINATED ON MASTER RECALL. RAN QRH ZONE TEMP 2.22 LIGHT EXTINGUISHED WHEN PUSHING MASTER CAUTION RESET. GROUNDED - YES. RAN AMM 21-61-00,  PACK ZONE BITE AND NO STORED FAULTS RAN PACKS IAW 21-00-00 AND NO FAULTS FOUND.

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