Service difficulty report · Rotor · Snias AS350B3

Difficulty date
October 11, 2011
Submitted
October 28, 2011
Operation
General aviation
Aircraft
N3972A
Make and model
Snias AS350B3
Aircraft serial
7082
Engine
Tmeca ARRIEL2B1
Part
Rotor
Part number
355A31000201
Part serial
M3545
Condition
Out Of Balance
Location
Main Rotor Sys
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

AFTER INSTALLATION OF REPAIRED TAIL ROTOR, A MAIN ROTOR TRACK AND BALANCE WAS REQUIRED AND CONDUCTED. BOTH THE TRACK AND THE BALANCE OF THE MAIN ROTOR SYS WAS FOUND TO BE OUT OF LIMITS. THE ONLY MX PERFORMED ON THIS SYS WAS THE RE-TORQUE REQURIED AFTER THE ASSY OF A NEW COMPONENT AND A 100 HR INSP IN WHICH NO DISASSEMBLY OF THE MAJOR COMPONENTS IS REQUIRED.