SDR ASAA2022121441127

Service difficulty report · Warning Message · Boeing 737890

Difficulty date: December 14, 2022
Submitted: December 15, 2022
Operation: Air carrier
Aircraft: N583AS
Make and model: Boeing 737890
Aircraft serial: 35681
Aircraft time: 53,662 hours, 15,685 cycles
System (JASC): 2160 · Cabin Temperature Control System
Part: Warning Message
Condition: False Activation
Location: Cockpit Temp
Stage of operation: NR
How discovered: 9
Nature of condition: N
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

CONTROL ZONE CONTROL CAB LIGHT ON RECALL RESETS, TEMP CONTROLLABLE. GROUNDED - YES. VERIFIED FAULT, ACCOMP PACK ZONE TEMP CONTROL BITE, #1 CONT NO FAULTS, #2 FAULTS FLT DECK TRIM VALVE. CLEARED FAULT, REACCOMPLISHED PACK ZONE TEMP CONT BITE BOTH CONT SHOW NO FAULTS. REF B737-800 AMM 21-61-00-700-806-002. ACCOMP TRIM VALVE TEST, TEST PASS REF AMM 21-51-10-740-001.