SDR AU961006

Service difficulty report · Bearing · Boeing 737377

Difficulty date
May 28, 1996
Submitted
March 26, 2000
Operation
General aviation
Make and model
Boeing 737377
Part
Bearing
Part number
20894
Condition
Failed
Location
Main Hyd Sys
Component
Abex · 56193
Stage of operation
DE
Nature of condition
K, J
Precautionary procedure
K

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

What was found

(AUS) SYSTEM 'A' HYDRAULIC PUMP ELECTRIC MOTOR FAILED - INVESTIGATION FOUND METAL CONTAMINATION - FURTHER INVESTIGATION FOUND THAT THE LOCKWIRE ON TWO ATTACHMENT SCREWS PNO NAS1352-08H6 SECURING CYLINDER BARREL PNO 56550 TO CYLINDER BEARING PNO 56445 WASMISSING - LOCKWIRE ON THE REMAINING FOUR SCREWS WAS BROKEN - IN ADDITION THE TRUNNION BEARING PNO 21830 WAS BRINNELED - PUMP HOUSING THRUST BEARING PNO 20894 BREAKING UP