Service difficulty report · Control Valve · Boeing 737890

Difficulty date
August 16, 2018
Submitted
August 20, 2018
Operation
Air carrier
Aircraft
N584AS
Make and model
Boeing 737890
Aircraft serial
35682
Aircraft time
41,930 hours, 12,501 cycles
Part
Control Valve
Part number
3989083
Part serial
9843
Condition
Failed
Location
Lt A/C Pack
Part time
41,945 hours, 12,510 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

LEFT PACK LIGHT ILLUMINATED DURING MASTER CAUTION RECALL, CLEARED DURING MASTER CAUTION RESET. ACFT GROUNDED. REMOVED AND REPLACED THE NR 1 TCV IAW AMM 21-51-10. OPS CHECKED GOOD. FAULT CLEARED.