Service difficulty report · Starter · Boeing 74747UF

Difficulty date
June 7, 2025
Submitted
June 9, 2025
Operation
Air carrier
Aircraft
N408MC
Make and model
Boeing 74747UF
Aircraft serial
29261
Aircraft time
101,899 hours, 17,138 cycles
Part
Starter
Condition
Faulted
Location
Zone 400
Stage of operation
CL
How discovered
O
Nature of condition
K, J
Precautionary procedure
E, A

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

What was found

ENG 1 OIL PRESS EICAS MSG. ENG 1 OIL QTY DROPPED ON INITIAL CLIMB, PRESSURE DECREASED STEADILY UNTIL ENG 1 SHUT DOWN IN FLIGHT. ENG WINDMILL FOR 15 MINUTES.(<P>FOUND PACKING ON STARTER SHAFT CUT. REPLACED PACKING. INSPECTED MCD, FOUND SMALL QTY METAL SHAVING CLEARED AND LEAK CHECKED. MCC NOTIFIED WITH FINDINGS. REMOVED & REPLACED ENG #1 STARTER IAW AMM 80-11-01/401. OPS CHECK GOOD. IDLE LEAK CHECK GOOD. PERFORMED TEST #5 IDLE LEAK CHK IAW AMM 71-00-00-7055-152-J00, OPS CHK & LEAK CHECK GOOD. HIGH POWER RUN CHK, LEAK CHK GOOD TOO, AFTER HIGH POWER RUN. NO LEAKS NOTICED. ENG OKAY TO SERVICE. ALL CHECKS GOOD AND OIL PRESSURE/TEMPERATURE WITHIN AMM SPECIFICATIONS PER 71-00-00.</P>)

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