Service difficulty report · Valve · Boeing 737990ER

Difficulty date
June 7, 2022
Submitted
June 8, 2022
Operation
Air carrier
Aircraft
N493AS
Make and model
Boeing 737990ER
Aircraft serial
41727
Aircraft time
22,353 hours, 7,019 cycles
Part
Valve
Part number
UNKNOWN
Condition
Faulted
Location
Unknown
Stage of operation
NR
How discovered
V
Nature of condition
J
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 ON WITH M/C RECALL IT DOES EXTINGUISH WHEN RESET. GROUNDED - YES. RELEASED PER 21-21G FLIGHT DECK PRIMARY TEMP INOP. #2 ZONE TEMP CONT LOGGED FLT DECK TRIM VALVE FAULT, FAULT CLEARED & CKS GOOD PER B737-900 AMM 21-61-00. GND VERIFICATION SUCCESSFUL.