SDR FDEA200902100495

Service difficulty report · B-Nut · Doug MD1010F

Difficulty date: February 10, 2009
Submitted: February 10, 2009
Operation: Air carrier
Aircraft: N381FE
Make and model: Doug MD1010F
Aircraft serial: 46615
Aircraft time: 85,671 hours, 35,054 cycles
System (JASC): 2910 · Hydraulic System, Main
Part: B-Nut
Condition: Leaking
Location: Door Cylinder
Stage of operation: CR
How discovered: O
Nature of condition: K, J
Precautionary procedure: O

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

What was found

FL 350 1 HR INTO FLIGHT GOT LVL 1 ALERT "HYD 3 ELEV OFF". HYD SYNOPTIC SHOWED 3.5 GAL REMAINING AND SLOWLY DECREASING. ELECTED TO LOWER THE GEAR CONVENTIONALLY BEFORE WE LOST ALL HYD 3 QUANTITY. CONTINUED TO DESTINATION 100 MILES AHEAD. OVER NEXT 20 MINUTES SYS 3 QUANTITY DECREASED TO .5 GAL REMAINING RESULTING IN LVL 2 ALERT "HYD SYS 3 FAIL" LANDED WITHOUT FURTHER PROBLEMS. FOUND LEAK AT INBD B-NUT ON RT MLG DOOR LATCH CYLINDER. PERFORMED PERMANENT REPAIR PER MM 20-10-01 -2 USING RYNGLOK P/N R82101T04.

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