Service difficulty report · Warning System · Boeing 737990ER

Difficulty date
March 15, 2019
Submitted
March 19, 2019
Operation
Air carrier
Aircraft
N413AS
Make and model
Boeing 737990ER
Aircraft serial
35205
Aircraft time
23,754 hours, 7,723 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

ON RECALL, IN FLIGHT, CONTROL CAB ZONE TEMP LIGHT ILLUMINATED, NO EXCESSIVE TEMPERATURE EXPERIENCED. GROUNDED - YES. NR 2 PZTC LOGGED FLT DECK TRIM VALVE. VERIFIED -5 P/N VALVE INSTALLED. RESET FAULT. COULD NOT DUPLICATE MALFUNCTION. NR 2 PZTC BITE CK NORMAL SEVERAL TIMES. TAV MOVEMENT WAS SMOOTH & NORMAL THROUGHOUT TEST. OP CK NORMAL REF FIMS 21-62 TASK 801 & 832.