SDR QML2ML0291

Service difficulty report · Bushing · Bolkms BK117B2

Difficulty date
August 4, 2010
Submitted
August 5, 2010
Operation
Air carrier
Aircraft
N217LN
Make and model
Bolkms BK117B2
Aircraft serial
7042
Aircraft time
9,634 hours, 33,627 cycles
Engine
Lyc LTS101*
Part
Bushing
Condition
Damaged
Location
Main Rotor Head
Component
Main Rotor Head
Component part number
117141081
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

DAMAGE FOUND ON THE MAIN ROTOR HEAD ASSY INNER SLEEVES AFTER THE BLADES HAD BEEN REMOVED FOR OTHER MX. THE PRIMARY BLADE BUSHING IN THE MAIN ROTOR BLADE CAUSED DAMAGE ON THE INNER SLEEVE.