Service difficulty report · Bearing · Hughes 369D

Difficulty date
June 18, 2002
Submitted
September 6, 2002
Operation
Air carrier
Make and model
Hughes 369D
Aircraft time
10,575 hours
Engine
Allsn 250C20B
Part
Bearing
Part number
369D25146
Condition
Cracked
Location
Tail Rotor
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) M/R CHIP LIGHT WAS REPORTED. CHIP PLUGS INSPECTED AND FOUND TO HAVE LARGE AMOUNT OF DEBRIS. SOURCE FOUND TO BE THE T/R O/P PINION ROLLER BEARING. THE INNER RACE WAS FOUND TO BE CRACKED AND HEAVY SPALLING WAS ALSO OCCURRING. THIS INNER RACE IS PRESSED ONTO THE PINION WITH AN INTERFERENCE FIT.