Service difficulty report · Starflex · Snias AS350B2

Difficulty date
July 2, 2009
Submitted
July 2, 2009
Operation
General aviation
Aircraft
N6103X
Make and model
Snias AS350B2
Aircraft serial
2723
Aircraft time
8,146 hours, 13,010 cycles
Engine
Tmeca ARRIEL1D1
Engine time
3,932 hours, 3,238 cycles
Part
Starflex
Part number
350A31191701
Part serial
M2580
Condition
Debonded
Location
M/R Head
Part time
1,660 hours, 2,374 cycles
Component
Rotor Head
Component part number
355A31000108
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

DURING A DAILY INSP, CRACKS NOTED ON MAIN ROTOR STARFLEX IN ADHESIVE BOND FILLET THAT BONDS BUSHING ONTO STARFLEX ARM. NO INDICATION OF A BOND SEPARATION OR GAP BETWEEN BUSHING & STARFLEX. UTILIZING PROCEDURE FROM MM 62.20.00.601 PARA 7, TEST PERFORMED TO CHECK FOR BOND SEPARATION BETWEEN BUSHING AND STARFLEX ARM. WITH NO MOVEMENT OR DEBONDING NOTED TO BUSHING SLEEVE ASSY WAS THEN REMOVED TO FURTHER INSPECT THE BUSHING. BY GRIPPING BUSHING WITH THE HAND, IT COULD BE ROTATED ABOUT .0625 OF A TURN THUS CONFIRMING A DEBONDED BUSHING WHICH IS CAUSE FOR REPLACEMENT OF STARFLEX ASSY.