Service difficulty report · Bearing · Hughes 369D

Difficulty date
May 3, 1999
Submitted
April 14, 2000
Operation
Air carrier
Make and model
Hughes 369D
Aircraft time
9,268 hours
Engine
Allsn 250C20B
Part
Bearing
Part number
6874525
Condition
Making Metal
Location
Gearbox
Part time
10,382 hours
Component
Turbine Engine R · Allsn · 250C20B
Stage of operation
CR
How discovered
O
Nature of condition
J
Precautionary procedure
A

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

What was found

(CAN) METAL FLAKES WERE FOUND IN THE CHIP DETECTOR. THE CHIP DETECTOR WAS CLEANED AND THE ENGINE GROUND RUN. THE CHIP LIGHT ILLUMINATED AT GROUND IDLE. THE ENGINE WAS REMOVED DUE TO EXCESSIVE METAL IN THE CHIP DETECTOR. DISASSEMBLY FOUND THE NR 3 AND NR 4 BALL BEARINGS HAD FAILED. A NEW ROLLER BEARING WAS INSTALLED.