Service difficulty report · Control Valve · Boeing 737890

Difficulty date
October 5, 2020
Submitted
October 7, 2020
Operation
Air carrier
Aircraft
N506AS
Make and model
Boeing 737890
Aircraft serial
35690
Aircraft time
45,066 hours, 13,744 cycles
Part
Control Valve
Part number
3989083
Part serial
19340
Condition
Inoperative
Location
A/C Pack Temp
Part time
6,716 hours, 2,547 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

MASTER CAUTION RECALL, RIGHT PACK LIGHT ILLUMINATED AND RESET WITH MASTER CAUTION RECALL. GROUNDED-YES. REMOVED AND REPLACED RT PACK TEMP CONTROL VALVE. LEAK AND OPS CK NORMAL, REF B737-800 AMM 21-51-10. GROUND VERIFICATION NORMAL.