Service difficulty report · Bearing · Boeing 747475

Difficulty date
January 23, 2002
Submitted
March 21, 2002
Operation
General aviation
Make and model
Boeing 747475
Aircraft time
44,669 hours, 5,772 cycles
Engine
Ge CF680C2*
Part
Bearing
Part number
NHA65B0150211
Condition
Cracked
Location
Rt Mlg
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

(CAN) RT BODY GEAR RETRACT ACTUATOR,, LOWER BEARING FAILED.FOUND SPHERICAL BEARING INNER RACE CRACKED THROUGH. LARGE PIECE OF INNER RACE BROKEN OUT. ROLLERS CORRODED AND MISSING. WATER INGRESSION TO BEARING EVIDENT UPON DISASSEMBLY. HIGH LEVEL OF CORROSION TO ROLLERS AND INNER RACE. RETAINING RING AND ATTACHING HARDWARE WORN THROUGH. END ASSEMBLY REPLACED.END ASSEMBLY - 65B01531-4 P/N NHA 65B01502-11 S/N MHB950