Service difficulty report · Clutch · Enstrm 280C

Difficulty date
October 2, 2003
Submitted
October 20, 2003
Operation
General aviation
Aircraft
N646H
Make and model
Enstrm 280C
Aircraft serial
1099
Engine
Lyc HIO360*
Part
Clutch
Part number
28132531
Condition
Worn
Location
Drive Belt
Part time
4,032 hours
Stage of operation
NR
How discovered
9
Nature of condition
O
Precautionary procedure
O

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

What was found

ON DRIVE BELT CLUTCH MECHANISM, THE SPRING HAD WORN THROUGH THE SIDE OF THE HOUSING FROM MANY HOURS OF RUBBING BACK AND FORTH. THE ABOVE MENTIONED SPRING AND THE SPRING CAP WERE ALSO WORN BEYOND THE INSPECTION CRITERIA IN THE MFG MM. AS FAR AS WE COULD TELL FROM RESEARCHING RECORDS, THESE ARE ALL ORIGINAL PARTS WITH 4032.1 HOURS ON THEM. PERHAPS REGULAR INSPECTION INTERVALS, 500 TO 1000 HOURS, WOULD CATCH A PROBLEM BEFORE IT BECOMES CATASTROPHIC.