SDR ASAA2016051916799

Service difficulty report · Warning Light · Boeing 737890

Difficulty date: May 19, 2016
Submitted: May 23, 2016
Operation: Air carrier
Aircraft: N531AS
Make and model: Boeing 737890
Aircraft serial: 35199
Aircraft time: 23,515 hours, 7,039 cycles
System (JASC): 2160 · Cabin Temperature Control System
Part: Warning Light
Condition: False Activation
Location: Cabin 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

ON RECALL CONT CAB ZONE TEMP ILLUMINATED. RESETS WITH MASTER CAUTION. ACFT GROUNDED. ACCOMPLISHED PACK TEMP CONTROL BITE, REF FIM 21-62, TASK 801. FOUND FLIGHT DECK TRIM VALVE FAULT. COMPLETED VERIFY TEST, NO FAULTS FOUND. CLEARED FAULT, PACK TEMP CONTROL OPS NORMAL.