Service difficulty report · Warning System · Boeing 737990ER

Difficulty date
May 25, 2019
Submitted
May 28, 2019
Operation
Air carrier
Aircraft
N403AS
Make and model
Boeing 737990ER
Aircraft serial
41730
Aircraft time
26,077 hours, 8,547 cycles
Part
Warning System
Condition
False Activation
Location
Cockpit
Stage of operation
NR
How discovered
O
Nature of condition
N
Precautionary procedure
K

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

What was found

CONT CAB ZONE TEMP LIGHT ILLUMINATED WITH RECALL. GROUNDED - YES. #2 ZONE TEMP CONTROLLER FAULTED FLT DECK TRIM VALVE ON BIT & PREV FLT, GREEN GO FOR VERIFY, FAULT RESET. RAN PACKS & REACCOMPLISHED PACK TEMP CONTROL BITE REF FIM 21-62 TASK 801 GROUND VERIFICATION PASSED.