Service difficulty report · Start Valve · Boeing 737890

Difficulty date
July 22, 2023
Submitted
July 24, 2023
Operation
Air carrier
Aircraft
N529AS
Make and model
Boeing 737890
Aircraft serial
35198
Aircraft time
46,862 hours, 13,850 cycles
Part
Start Valve
Part number
32896305
Part serial
10102
Condition
Faulty
Location
#1 Engine
Part time
53,363 hours, 16,590 cycles
Stage of operation
TX
How discovered
V
Nature of condition
J
Precautionary procedure
D

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

What was found

#1 ENG STARTER VALVE STAYED ILLUMINATED THEN FLASHED WHILE STARTING. GROUNDED - YES. ACCOMPLISHED ALT DEACTIVATION PROCEDURES. REVERSED ALT DEACTIVATION PROCEDURES REF MPM 5-07-01 TBL3 ITEM 9 G. BERGONIA 53561 07/22/2023. RMVD & RPLD #1 ENG START VALVE ASSY REF MM 80-11-03 (VERFIED BONDING CK GOOD PER SAME. P. BASSEN 91832) OPS CK'D #1 ENG START VALVE OPS NORMAL NO LEAKS NOTED REF LGPG 60496132 FOR COWLING OPEN/CLSING & ALT DEACT PROCEDURES.