Service difficulty report · Start Valve · Boeing 74745E

Difficulty date
February 7, 2024
Submitted
February 7, 2024
Operation
Air carrier
Aircraft
N473MC
Make and model
Boeing 74745E
Aircraft serial
27174
Aircraft time
116,445 hours, 20,984 cycles
Part
Start Valve
Part number
32911723
Part serial
1349C
Condition
Faulted
Location
Nr 2
Stage of operation
TO
How discovered
O
Nature of condition
R, J
Precautionary procedure
C

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

What was found

ENG 2 LAGGING BEHIND OTHER 3 ON APPLICATION OF TAKEOFF POWER. AIRCRAFT YAWED SLIGHTLY TO THE LEFT, SPEED IN THE 20 TO 30 KNOT RANGE WHEN TAKEOFF REJECTED. #2 START VALVE FOUND NOT CLOSED AND WOULD NOT CLOSE.(<P>START VALVE AND STARTER BOTH REPLACED IAW AMM 80-11-02/401. OPS CHK GOOD.</P>)

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