Service difficulty report · Spacer · Skrsky CH54B

Difficulty date
October 20, 2004
Submitted
December 29, 2004
Operation
General aviation
Aircraft
N179AC
Make and model
Skrsky CH54B
Aircraft serial
64091
Part
Spacer
Part number
6516000047101
Condition
Cracked
Location
T/R Blade
Component
Blade · Skrsky
Component part number
6516100001042
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

PART OF THE OB ROOT END SPACER BLOCK BROKE OFF AND WAS SENT THROUGH THE TIP CAP. THE OB SPACER BLOCK HAS SPLIT AROUND THE L/E THROUGH BOLT. PRIOR TO DISASSEMBLY THE OB MOST SPACER BLOCK COULD BE SEEN AS MISSING A PORTION THAT IS ABOUT THE SAME SIZE AS THE HOLE IN THE TIP CAP. UPON DISASSEMBLY OF THE ROOT END, IT APPEARS AS IF THE ROOT END SPACER BLOCK WAS NOT PROPERLY FITTED TO THE INSIDE OF THE SPAR. THE L/E OF BLOCK WAS BEARING THE COMPRESSIVE STRESS IMPOSED BY THE TORQUE SQUEEZE OF THE THROUGH BOLTS. IB SPACER BLOCK FOR THE THROUGH BOLTS IS CRACKED IN THE SAME AREAS THAT THE OTHER BLOCK FAILED. BLOCK WAS NO PROPERLY SHAPED INSIDE OF THE SPAR AND IS SHOWING CONTACT WITH THE SPAR ONLY IN CTR OF BLOCK.