Service difficulty report · Control Valve · Boeing 737890

Difficulty date
July 25, 2018
Submitted
July 31, 2018
Operation
Air carrier
Aircraft
N530AS
Make and model
Boeing 737890
Aircraft serial
36578
Aircraft time
32,500 hours, 9,653 cycles
Part
Control Valve
Part number
3989085
Part serial
21468
Condition
Failed
Location
Ac Bay
Part time
15,709 hours, 4,812 cycles
Stage of operation
TX
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 ENGINE START LEFT PACK LIGHT ILLUMINATES WITH MASTER CAUTION RECALL AND EXTINGUISHES WITH RESET. GROUNDED - YES. REMOVED & REPLACED LEFT PACK TEMP CONTROL VALVE REF AMM 21-51-10. BITE AND OPS CHECK GOOD.