# SDR ASAA2018102926630

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 26, 2018
- Submitted: October 29, 2018
- Operation: Air carrier
- Aircraft: [N478AS](https://openairdocs.org/aircraft/N478AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44105
- Aircraft time: 13,230 hours, 4,460 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: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2018102926630

## Discrepancy

ON RECALL CONT CABIN ZONE TEMP LIGHT ON. GOES OUT ON RECALL. GROUNDED - YES. ACCOMPLISHED PACK ZONE TEMP CTL BITE. FAULTED FLT DK TCV. FAULT CLEARS. ACCOMPLISHED BITE AGAIN. NO FAULTS. RAN PACKS & VARIED TEMP. NO FAULTS. REF FIM 21-62 TASK 801.

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