SDR UIEA2026010300003

Service difficulty report · Plug · Boeing 74747UF

Difficulty date: January 3, 2026
Submitted: January 5, 2026
Operation: Air carrier
Aircraft: N476MC
Make and model: Boeing 74747UF
Aircraft serial: 29256
Aircraft time: 103,423 hours, 18,846 cycles
Engine: Ge CF66D
System (JASC): 7261 · Turbine Engine Oil System
Part: Plug
Condition: Leaking
Location: Zone 400
Stage of operation: CR
How discovered: O
Nature of condition: K
Precautionary procedure: A

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

What was found

DIVERSION ENGINE 3 OIL QUANTITY LOSS. INSPECTED #3 ENG AND FOUND OIL LEAKING FROM #3 IDG. DEACTIVATION BLANKING PLATE, REMOVED BLANKING PLATE AND FOUND DRIVE SEAL PLUG MISSING & INSTALLED DRIVE SEAL PLUG PER MEL 24-11-01A. RAN ENG IAW AMM 71-00-00, LEAK CHECK OK.

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