Service difficulty report · Start Valve · Boeing 737832

Difficulty date
May 18, 2006
Submitted
May 23, 2006
Operation
Air carrier
Aircraft
N372DA
Make and model
Boeing 737832
Aircraft serial
29620
Aircraft time
20,398 hours, 9,805 cycles
Engine
Ge CFM56*
Engine time
20,421 hours, 9,816 cycles
Part
Start Valve
Part number
32896302
Part serial
5678
Condition
Open
Location
Nr 1 Engine
Stage of operation
CL
How discovered
O
Nature of condition
O
Precautionary procedure
A

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

What was found

FOUND ENG START VLV OPEN IN FLT ON NR 1 ENG. DUCT PRESS SURGING AS LT START VLV OPENED AND CLOSED AFTER T/O. LANDING WAS UNDER WT AND LOW ENERGY AFTER IN FLIGHT SHUTDOWN. FOUND START VALVE STICKING SLIGHTLY OPEN. REPLACED ENG START VALVE PER M/M 80-11-03. RAN NR 1 ENG WITH IND AND PRESSURES NORMAL.