# SDR ASAA2015111513780

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 15, 2015
- Submitted: November 18, 2015
- Operation: Air carrier
- Aircraft: [N461AS](https://openairdocs.org/aircraft/N461AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 36363
- Aircraft time: 6,544 hours, 2,117 cycles
- System (JASC): [2160 · Cabin Temperature Control System](https://openairdocs.org/jasc/2160)
- Part: Warning Light
- Condition: False Activation
- Location: Cabin Temp
- Stage of operation: TX
- How discovered: 9
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2015111513780

## Discrepancy

UPON "RECALL" ON THE AFTER START CHECK LIST, CONTROL CABIN ZONE TEMP LIGHT ILLUMINATES.  LIGHT RESET UPON MC PUSH TO RESET.  ACFT GROUNDED.  ACCOMPLISHED PACK/ZONE TEMP CONTROLLER BITE TEST, CONTROLLER NR 1 NO FAULTS, CONTROLLER NR 2 FAULTED TRIM VALVE FLT DECK, V143.  CLEARED FAULT.  RAN PACKS FOR 1 HOUR WITH NO ZONE TEMP ISSUES.  ACCOMPLISHED CABIN TEMP CONTROL AND IND OPS TEST, TEST PASSES. REACCOMPLISHED PACK/ZONE TEMP CONTROLLER BITE TEST, BOTH CONTROLLERS SHOW NO FAULTS, REF AMM 21-61-00-700-806-002, & 21-61-00-700-807-002.

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