Service difficulty report · Spur Gear

Difficulty date
September 24, 2011
Submitted
January 23, 2013
Operation
General aviation
Engine
Garrtt TPE33110UA
Part
Spur Gear
Part number
31035851
Condition
Damaged
Location
Gearbox
Part time
590 hours
Stage of operation
NR
How discovered
O
Nature of condition
J
Precautionary procedure
O

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

What was found

(CAN) MX NOTIFIED OF A CHIP LIGHT ON THE ACFT AND WHEN THEY INSPECTED THE CHIP DETECTOR IT WAS NOTICED TO HAVE ALOT OF METAL ON THE DETECTOR. THE OIL FILTER WAS PULLED AND GEARCASE DRAINED. THE ENGINE WAS THEN REMOVED DUE TO THE AMOUNT OF METAL PRESENT. THE ENGINE WAS FORWARDED TO THE ENGINE SHOP FOR EVALUATION. UPON REMOVAL OF THE GEARCASE ASSY THE BEARING THAT DRIVES THE SPUR GEAR FOR THE TORQUE SENSOR WAS NOTICED TO HAVE FALLEN APART. THE ENGINE WAS FLUSHED OF ALL METAL AND A NEW BEARING INSTALLED. NO FURTHER PROBLEMS AT THIS TIME.