Service difficulty report · Rotor Head · Bolkms BK117C2

Difficulty date
April 6, 2026
Submitted
April 6, 2026
Operation
General aviation
Filed by
QR9R369D
M1 Support Services
Make and model
Bolkms BK117C2
Aircraft serial
9773
Aircraft time
4,762 hours
Part
Rotor Head
Part number
B642M1005101
Part serial
3374
Condition
Out Of Limits
Location
Tail Rotor
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

THE LAMINATED PILE ASSEMBLY WAS RECEIVED FROM SUPPLY WITH A GAP EXCESS OF .0078".