Service difficulty report · Bearing · Cessna 550

Difficulty date
October 6, 2001
Submitted
October 9, 2001
Operation
General aviation
Aircraft
N2649
Make and model
Cessna 550
Aircraft serial
5500607
Aircraft time
5,513 hours, 4,622 cycles
Part
Bearing
Part number
MS27645A4
Condition
Corroded
Location
Elevator
Part time
5,513 hours
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

THE ELEVATOR WAS REMOVED TO FACILLITATE OTHER MAINTENANCE. UPON REMOVAL OF THE RIGHT HAND ELEVATOR, THE INBOARD ELEVATOR BEARING, INNER RACE CAME OFF WITH THE INBOARD MOUNT BOLT. DURING THE REMOVAL OF THE ELEVATOR, THE BALL BEARINGS FELL OUT OF THE OUTER RACE. UPON FURTHER INVESTIGATION, THE INNER AND OUTER RACE HAD RUST AND RUST POWDER ON THE INNER AND OUTER SURFACES OF THE RACES. THE INNER RACE WAS NOT "SEIZED" TO THE MOUNT BOLT. SOME OF THE BALL BEARINGS WERE MISSING, WHILE SOME SHOWED SIGNS OF CORROSION AND METAL TO METAL CONTACT, SOME WERE NOT FOUND AT ALL. THE BARING, P/N MS27645-A4, WAS REPLACED WITH A NEW BEARING AND STAKED IN ACCORDANCE WITH CESSNA MAINTENANCE INSTRUCTIONS.

More about the Cessna 550