Service difficulty report · Valve · Boeing 737890

Difficulty date
December 14, 2011
Submitted
December 21, 2011
Operation
Air carrier
Aircraft
N564AS
Make and model
Boeing 737890
Aircraft serial
35103
Aircraft time
19,739 hours, 6,220 cycles
Part
Valve
Part number
3989083
Part serial
8724
Condition
Failed
Location
Cabin Temp
Part time
19,599 hours, 5,890 cycles
Stage of operation
TX
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

ZONE TEMP DURING RECALL "CONT CAB". ACCOMPLISHED PACK/ZONE TEMP CONTROLLER BITE REF MM 21-62-00-810-801. RT CONTROLLER LOGS FLT DECK TRIM VALVE ON ALL PREVIOUS FLIGHTS. REPLACED THE FLT DECK ZONE TRIM VALVE PER AMM 21-61-21-000-801. BITE CHECK GOOD. LEAK CHECKED GOOD. OPS CHECKED GOOD.