SDR UIEA2018040100509

Service difficulty report · Start Valve · Boeing 7673S1

Difficulty date: April 1, 2018
Submitted: April 6, 2018
Operation: Air carrier
Aircraft: N640GT
Make and model: Boeing 7673S1
Aircraft serial: 25221
Aircraft time: 85,271 hours, 18,107 cycles
System (JASC): 8012 · Engine Start Valves/Controls
Part: Start Valve
Part number: 32911723
Part serial: 528C
Condition: Failed
Location: Lt Engine
Stage of operation: CL
How discovered: O
Nature of condition: J
Precautionary procedure: O

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

What was found

LEFT ENGINE START VALVE INOPERATIVE. R & R THE LEFT ENGINE START VALVE IAW AMM 80-11-02. VISUALLY INSPECTED ALL THREE WIRE HARNESSES FROM START VALVE TO PYLON FOR SHORTS, OPEN, CONTINUITY, CHAFING, AND CONDITION. NO FAULTS FOUND. GVI LEFT ENGINE N2 SPEED CARD (M1093) NO FAULTS FOUND. RAN ENGINE START VALVE, OPS NORMAL.

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