# SDR ASAA2019072630202

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 26, 2019
- Submitted: July 30, 2019
- Operation: Air carrier
- Aircraft: [N472AS](https://openairdocs.org/aircraft/N472AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 60580
- Aircraft time: 17,217 hours, 5,544 cycles
- System (JASC): [2162 · Cabin Temperature Indicator](https://openairdocs.org/jasc/2162)
- Part: Warning System
- Condition: False Activation
- Location: Cockpit
- 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/ASAA2019072630202

## Discrepancy

FWD CABIN ZONE TEMP ILLUMINATED ON RECALL. EXTINGUISHED WHEN MASTER CAUTION WAS RESET. GROUNDED - YES. ACCOMPLISHED PACK/ZONE TEMPERATURE CONTROLLER BITE TEST REF AMM 21-61-00, NO FAULT FOUND, GROUND VERIFICATION GOOD.

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