Service difficulty report · Bearing · Robsin R44RAVENII

Difficulty date
June 12, 2008
Submitted
November 3, 2008
Operation
General aviation
Make and model
Robsin R44RAVENII
Aircraft time
810 hours
Engine
Lyc IO540AE1A5
Part
Bearing
Condition
Loose
Location
Magneto
Part time
453 hours
Component
Magneto
Component part number
106006169
Stage of operation
IN
How discovered
V
Nature of condition
W
Precautionary procedure
K

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

What was found

MAG RECEIVED FOR 500 HOUR INSP. BEFORE DISASSEMBLY 0.003 INCH OF END PLAY WAS NOTICED AT THE ROTOR. THIS WAS A FACTORY NEW MAG. MFG REQUIRES 0.0005 TO 0.0015 INCH END PLAY AT ASSY. THE MAG BEARINGS WERE INSPECTED FOR DAMAGE AND NONE WAS FOUND. THE BEARINGS WERE PROPERLY SHIMMED DURING THE 500 HOUR INSP AND THE MAG WAS RETURNED TO SERVICE.