Service difficulty report · Control Valve · Boeing 737890

Difficulty date
November 4, 2018
Submitted
November 7, 2018
Operation
Air carrier
Aircraft
N586AS
Make and model
Boeing 737890
Aircraft serial
35189
Aircraft time
42,225 hours, 12,893 cycles
Part
Control Valve
Part number
3989085
Part serial
21468
Condition
Failed
Location
Ac Bay
Part time
16,015 hours, 4,905 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

AFTER RECALL L PACK LIGHT ILLUMINATED GOES OUT WITH MASTER CAUTION RESET RAN QRH. GROUNDED - YES. REMOVED AND REPLACED LT TCV IAW AMM TASK 21-51-10-000-801 AND REPLACED WITH TASK 21-51-10-400-801 BONDING CHECK IS GOOD ON THE GROUND WIRE BITE CHECK GOOD NO LEAKS NOTED WITH SOAP CHECK.