Service difficulty report · Valve · Boeing 737990ER

Difficulty date
February 2, 2016
Submitted
February 4, 2016
Operation
Air carrier
Aircraft
N442AS
Make and model
Boeing 737990ER
Aircraft serial
43293
Aircraft time
8,672 hours, 2,799 cycles
Part
Valve
Part number
3989084
Part serial
20543
Condition
Failed
Location
Cabin Temp
Part time
8,672 hours, 2,799 cycles
Stage of operation
NR
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

CONTINUING REPORTS OF FWD CABIN ZONE TEMP LIGHT ON RECALL. ACFT GROUNDED. R & R FWD CABIN ZONE TRIM AIR MODULATING VALVE IAW AMM 21-61-21, INSTALLATION TEST NORMAL, NO LEAKS NOTED.