Service difficulty report · Start Valve · Boeing 737990ER

Difficulty date
June 27, 2019
Submitted
July 1, 2019
Operation
Air carrier
Aircraft
N457AS
Make and model
Boeing 737990ER
Aircraft serial
36355
Aircraft time
21,662 hours, 7,075 cycles
Part
Start Valve
Part number
32896302
Part serial
15792
Condition
Failed
Location
Nr 2 Engine
Part time
21,651 hours, 7,072 cycles
Stage of operation
TX
How discovered
O
Nature of condition
O
Precautionary procedure
D

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

What was found

START VALVE DID NOT OPEN STARTING ENGINE #2 START SEQUENCE ABORTED. GROUNDED - YES. REPLACED START VALVE ON #2 ENG, REF AMM 80-11-03. MPM- ALT DEACTIVATE PROCEED REVERSED. GROUND VERIFICATION TEST OF ETOPS SIG SYSTEM SUCCESSFUL REF : POWER PLANT TEST-- TASK 71-00-00-800-811-FOO.