# SDR ASAA2021042134642

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 21, 2021
- Submitted: April 26, 2021
- Operation: Air carrier
- Aircraft: [N468AS](https://openairdocs.org/aircraft/N468AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41735
- Aircraft time: 25,457 hours, 8,194 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/ASAA2021042134642

## Discrepancy

CONT CAB TEMP LIGHT ILLUMINATED ON RECALL AND RESETS WITH PUSH OF MASTER CAUTION. GROUNDED - YES. REF B737-900 FIM 21-62 TASK 832, ZONE TEMP CONTROLLER #2 SHOWS FLIGHT DECK TRIM VALVE FAULT WHEN 'BIT' & 'PREV FLT' PRESSED, FAULT UNLATCHED & CLEARED WHEN 'VERIFY' PRESSED'. RAN BITE CHECK AGAIN AND NO FAULTS SHOWED THIS TIME. PER FIM THIS IS AN INTERMITTENT FAULT.

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