Service difficulty report · Shutoff Valve · Boeing 737890

Difficulty date
July 30, 2021
Submitted
August 3, 2021
Operation
Air carrier
Aircraft
N565AS
Make and model
Boeing 737890
Aircraft serial
35181
Aircraft time
54,365 hours, 16,197 cycles
Engine
Cfmint CFM567B27
Part
Shutoff Valve
Part number
2688072
Condition
Faulty
Location
#1 Engine
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 SHUTDOWN AT THE GATE, ENGINES TO CUTOFF, #1 (LEFT ) ENGINE. "ENG VALVE CLOSED" REMAINS BRIGHT BLUE. GROUNDED - YES. REMOVED AND REPLACED #1 ENGINE HMU HPSOV SWITCH REF B737-800 AMM 73-21-09-000/400-801-F00. OPS CHECK GOOD.