Service difficulty report · Warning System · Boeing 737990ER

Difficulty date
March 31, 2017
Submitted
April 4, 2017
Operation
Air carrier
Aircraft
N471AS
Make and model
Boeing 737990ER
Aircraft serial
41703
Aircraft time
9,879 hours, 3,290 cycles
Part
Warning System
Condition
Malfunctioned
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 ILLUMINATES ON RECALL, EXTINGUISHES ON RESET. TEMP CONTROL NORMAL. GROUNDED - YES. BITE OF RIGHT ZONE TEMP CONTROLLER SHOWS FLIGHT DECK TRIM VALVE FAULT FOR LAST LEG. BITE CLEARED FAULT AND OPS NORMAL, REF AMM 21-61-20.