Service difficulty report · Bearing · Boeing 7377Q8

Difficulty date
December 12, 2005
Submitted
June 6, 2006
Operation
General aviation
Make and model
Boeing 7377Q8
Engine
Ge CFM56*
Part
Bearing
Part number
21830
Condition
Failed
Location
Hydraulic Pump
Part time
13,168 hours
Component
Hydraulic Pump
Component part number
5718607
Stage of operation
CR
How discovered
O
Nature of condition
K, J
Precautionary procedure
A

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

What was found

HYDRAULIC SYSTEM `A` ELECTRIC PUMP FAILED. INVESTIGATION FOUND THE FAILURE WAS CAUSED BY FAILURE OF THE PRE-MOD SB 57186-29-291 TRUNNION NEEDLE BEARING.

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