Service difficulty report · Start Valve · Boeing 737990ER

Difficulty date
March 10, 2016
Submitted
March 14, 2016
Operation
Air carrier
Aircraft
N479AS
Make and model
Boeing 737990ER
Aircraft serial
60576
Aircraft time
2,604 hours, 874 cycles
Engine
Cfmint CFM567B27E
Part
Start Valve
Condition
Malfunctioned
Location
Nr 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

START VALVE NR 1 ENGINE FAILED TO CLOSE AFTER ENGINE START. ACFT GROUNDED. ACCOMPLISHED REF 7.11, QRH PROCEDURE FOR NO STARTER CUTOUT/START VALVE OPEN. SUBSEQUENT ENGINE START NORMAL. ALL OTHER STARTS NORMAL.