Service difficulty report · O-Ring · Bombdr BD7001A10

Difficulty date
January 7, 2011
Submitted
March 15, 2011
Operation
Air carrier
Make and model
Bombdr BD7001A10
Aircraft time
13 hours
Engine
Rroyce BR700710A220
Part
O-Ring
Part number
NAS1611245
Condition
Pinched
Location
Nlg
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

UPON PERFORMING UNSCHEDULED MAINTENANCE IN THE FORWARD NOSE SECTION OF THE AIRCRAFT (LT SIDE), ACCESSIBLE THROUGH PANEL 131AL, A TECHNICIAN SAW GREASE COMING OUT OF THE NOSE LANDING GEAR SHOCK - STRUT BEARING CAP (LT CAP). GREASE IN THAT AREA IS POTENTIALLY DANGEROUS BECAUSE FOUR OXYGEN BOTTLES ARE ALSO LOCATED IN THE SAME AREA. INVESTIGATION REVEALED THAT CAP PN: GC317-0055-1 WAS IMPROPERLY INSTALLED WITH O-RING PN: NAS1611-245, O-RING FOUND PINCHED, ALLOWING GREASE TO INGRESS INTO PRESSURIZED AREA. O-RING WAS REPLACED, CAP REINSTALLED PER PROPER AMM PROCEDURE. LUBRICATION OF THE NLG SHOCK STRUT BEARING WAS DONE. CAP IS NOW HOLDING GREASE INSIDE CAVITY, THEREFORE, NO FURTHER ACTION IS REQUIRE.