Service difficulty report · O-Ring · Doug MD11F

Difficulty date
September 29, 2010
Submitted
September 30, 2010
Operation
Air carrier
Aircraft
N588FE
Make and model
Doug MD11F
Aircraft serial
48490
Aircraft time
62,833 hours, 12,041 cycles
Engine
Ge CF680C2D1F
Part
O-Ring
Condition
Missing
Location
Nr 2 Edp
Stage of operation
CR
How discovered
O
Nature of condition
W, 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

NOTICED NR 2 ENGINE OIL AT 7 QTS. LOSING APPROX 1 QT IN 20 MINUTES. DIVERTED. ENROUTE OIL QTY DECREASED TO 2 QTS & OIL PRESS STARTED TO DECREASE. ENGINE SHUTDOWN. EMERGENCY DECLARED. LANDING UNEVENTFUL. ISOLATED LEAK TO NR 2 ENG LOWER INBD HYD PUMP DRIVE PAD DRAIN. CAPPED DRAIN & PLUGGED DRAIN LINE IAW MM 71-70-00-6 1, PARA 12 (E) REPAIR GOOD FOR 10 ENG CYCLES. ON ARRIVAL, OIL LEVEL CHECKED, NO FURTHER LOSS OF OIL NOTED. REMOVED LT HYD EDP IAW AMM 29-11-20-4 & INSPECTED GARLOK SEAL, FOUND NO O-RING PACKING INSTALLED ON LT HYD EDP. INSPECTED EDP, NO DISCREPANCIES NOTED. INSTALLED O-RING ON EDP SHAFT, REINSTALLED EDP, & RAN NR 2. LEAK CHECKED GOOD ON HYD SYS & EDP. NO FURTHER OIL LEAKS NOTED.

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