Service difficulty report · Control Valve · Boeing 737890

Difficulty date
July 9, 2017
Submitted
July 10, 2017
Operation
Air carrier
Aircraft
N538AS
Make and model
Boeing 737890
Aircraft serial
41188
Aircraft time
20,391 hours, 5,948 cycles
Part
Control Valve
Part number
3966081
Part serial
3439
Condition
Faulted
Location
Left Ecs Bay
Part time
32,798 hours, 9,897 cycles
Stage of operation
NR
How discovered
O
Nature of condition
O
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

ENGINE N1 TARGET DIFFERENCES. ACFT GROUNDED. ACCOMPLISHED FIM 34-61TASK 839. NO DEFECTS NOTED. REPLACED LEFT FLOW CONTROL AND SHUTOFF VALVE IAW AMM 21-51-01. OPS CHECKED GOOD. LEAK CHECKED GOOD.