Service difficulty report · Anti-Ice Valve · Boeing 737890

Difficulty date
May 28, 2021
Submitted
June 1, 2021
Operation
Air carrier
Aircraft
N508AS
Make and model
Boeing 737890
Aircraft serial
35691
Aircraft time
46,760 hours, 13,805 cycles
Engine
Cfmint CFM567B27
Part
Anti-Ice Valve
Condition
False Activation
Location
Rt Engine
Stage of operation
NR
How discovered
O
Nature of condition
N
Precautionary procedure
O

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

What was found

RIGHT ENG ANTI ICE COWL VALVE STUCK OPEN. GROUNDED - YES. DRY RAN #2 ENG AND CYCLED #2 ENG ANTI ICE COWL VALVE SWITCH TO ON AND THEN OFF, THE BLUE LIGHT EXTINGUISHED, OPS NORMAL REF B737-800 AMM CH 71-00-00-700-821-F00.