Service difficulty report · Start Valve · Boeing 737890

Difficulty date
July 20, 2008
Submitted
July 23, 2008
Operation
Air carrier
Aircraft
N570AS
Make and model
Boeing 737890
Aircraft serial
35185
Aircraft time
5,734 hours, 1,696 cycles
Engine
Ge CFM567B24
Part
Start Valve
Part number
32896302
Part serial
10224
Condition
Failed
Location
Nr 1 Engine
Part time
5,734 hours, 1,696 cycles
Stage of operation
TX
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

ON STARTING ENGINE NR 1, WHEN START SWITCH PUT TO GROUND THERE WAS NO START VALVE LIGHT ILLUMINATION AND NO N2 ROTATION BUT THE EGT GAUGE DID ILLUMINATE. DID NOT SEE A DUCT PRESSURE RISE ON THE DUCT PRESSURE GAUGE. REMOVED AND REPLACED NR 1 ENGINE START VALVE REF MM 80-11-03. OPS CK OK.