SDR UIEA2024020700073

Service difficulty report · Start Valve · Boeing 74745E

Difficulty date: February 7, 2024
Submitted: February 8, 2024
Operation: Air carrier
Aircraft: N473MC
Make and model: Boeing 74745E
Aircraft serial: 27174
Aircraft time: 116,445 hours, 20,984 cycles
System (JASC): 8012 · Engine Start Valves/Controls
Part: Start Valve
Part number: 32911723
Part serial: 1349C
Condition: Faulted
Location: Nr 2
Stage of operation: TO
How discovered: 9
Nature of condition: J
Precautionary procedure: C

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

What was found

REJECTED TAKE OFF DUE TO AIRCRAFT SURGING. LOW SPEED REJECT(<P>#2 START VALVE FOUND NOT FULLY CLOSED, NOT ALLOWING ENG TO ACCELERATE, WITHIN NORMAL PARAMETERS. #2 ENG VALVE REPLACED PER AMM 80-11-02. PERF INLET AND EXHAUST INSP PER AMM 72-00-00, NO DEFECTS NOTED.</P>)

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