Service difficulty report · Modulating Valve · Boeing 737890

Difficulty date
December 3, 2022
Submitted
December 5, 2022
Operation
Air carrier
Aircraft
N519AS
Make and model
Boeing 737890
Aircraft serial
36482
Aircraft time
50,081 hours, 14,729 cycles
Part
Modulating Valve
Part number
3989083
Part serial
7178
Condition
Faulted
Location
Rt A/C Pack
Part time
63,606 hours, 22,687 cycles
Stage of operation
NR
How discovered
9
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

RIGHT PACK LIGHT ILLUMINATES DURING RECALL. RESETS OK. GROUNDED - YES. REMOVED AND REPLACED RIGHT TCV, V141 B737-800 AMM 21-51-10, OPS CHECK GOOD.