Service difficulty report · Start Valve · Boeing 737990ER

Difficulty date
December 4, 2022
Submitted
December 6, 2022
Operation
Air carrier
Aircraft
N407AS
Make and model
Boeing 737990ER
Aircraft serial
41731
Aircraft time
37,631 hours, 11,762 cycles
Part
Start Valve
Part number
32896305
Part serial
11106
Condition
Faulted
Location
Nr 1 Engine
Part time
48,872 hours, 14,684 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

#1 ENGINE WOULD NOT START DURING PUSH BACK. GROUNDED - YES. START VALVE REPLACED REF B737-900 AMM 80-11-03. ACCOMPLISHED PNEUMATIC LEAK CHECK REF AMM 71-00-00-700-809-F00. LEAK CHECK GOOD. OPS CHECK GOOD. NO DEFECTS NOTED.