Service difficulty report · Control Valve · Boeing 737900ER

Difficulty date
September 15, 2022
Submitted
September 16, 2022
Operation
Air carrier
Aircraft
N403AS
Make and model
Boeing 737900ER
Aircraft serial
41730
Aircraft time
36,753 hours, 11,742 cycles
Part
Control Valve
Part number
3989083
Part serial
13498
Condition
Failed
Location
Left Ecs Bay
Part time
43,530 hours, 12,934 cycles
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

LEFT PACK LIGHT ILLUMINATES ON RECALL. GOES OUT ON RESET. GROUNDED - YES. REMOVED & REPLACED TCV 1 REF B737-900 AMM 21-51-10.

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