Service difficulty report · Warning System · Boeing 737990ER

Difficulty date
October 20, 2018
Submitted
October 22, 2018
Operation
Air carrier
Aircraft
N469AS
Make and model
Boeing 737990ER
Aircraft serial
41702
Aircraft time
16,794 hours, 5,596 cycles
Part
Warning System
Condition
False Activation
Location
Cockpit
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

CONT CAB ZONE TEMP LIGHT ILLUMINATED OR RECALL AND RESETS UPON MASTER CAUTION RESET. GROUNDED - YES. RELEASED PER MEL 21-21G CONTROL CABIN PRIMARY ZONE TEMP INOP. CHECKED AND PERFORMED AMM PACK ZONE TEMP BITE, SHOWED "FLT DECK TRIM VLV" RESET AND ALL FAULTS CLEARED, PERFORMED BITE ALL PASS GO.