Service difficulty report · Warning Light · Boeing 737990ER

Difficulty date
March 7, 2021
Submitted
March 16, 2021
Operation
Air carrier
Aircraft
N459AS
Make and model
Boeing 737990ER
Aircraft serial
36352
Aircraft time
26,193 hours, 8,402 cycles
Part
Warning Light
Part number
UNKNOWN
Condition
False Activation
Location
Cockpit Temp
Stage of operation
NR
How discovered
O
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

ZONE TEMP CONT CABIN ILLUMINATED ON RECALL AND WOULD EXTINGUISH WHEN RESET. GROUNDED - YES. INBOUND CREW REPORTS IT'S STILL DOING IT. FLT DECK TRIM VALVE FAULT ON BITE. ACCOMPLISHED BITE CHECK OF #1 PACK/ZONE TEMP CONTROLLER. NO FAULTS FOR FLT DECK TRIM VALVE. CONFIRMED TRIM VALVE IS OPERATING OPEN/CLOSE. CONFIRMED CONT CAB TEMP SELECTOR WORKS WARM/COLD. NO LIGHT ON RECALL.