Service difficulty report · Bearing · Beech 200BEECH

Difficulty date
February 6, 2002
Submitted
March 1, 2002
Operation
Air carrier
Aircraft
N12CF
Make and model
Beech 200BEECH
Aircraft serial
BB534
Engine
Pwa PT6A41
Part
Bearing
Part number
B543DD
Condition
Failed
Location
Mlg Actuator
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

POST FLIGHT INSPECTION FOUND BOTH PIVOT BEARINGS ON LEFT MAIN LANDING GEAR ACTUATOR SHATTERED. UPON REMOVAL, BOTH BEARING OUTER RACES HAD BEEN BROKEN IN HALF AND BALLS FALLING DOWN TO WING SPAR. MISC PIECES ALSO LAYING ON SPAR, CONSIDERING THE FORCE REQUIRED TO SHATTER A BEARING RACE, THE ACTUATOR LEFT MAIN LANDING GEAR WAS REPLACED. ACTUATOR SHOWS NO EXTERNAL SIGN OF DAMAGE EXCEPT THAT DOWN LOAD SPRING IS LOOSE FROM POSSIBLE OVER COMPRESSION. NO GEAR OR SHAFT BINDING, BUT REPLACED FOR SAFETY.