Service difficulty report · Cyclic Control · Bolkms BK117B2

Difficulty date
March 4, 2018
Submitted
March 7, 2018
Operation
Air carrier
Aircraft
N1174U
Make and model
Bolkms BK117B2
Aircraft serial
7146
Aircraft time
8,623 hours, 29,144 cycles
Engine time
20,303 cycles
Part
Cyclic Control
Condition
Malfunctioned
Stage of operation
AA
How discovered
O
Nature of condition
F
Precautionary procedure
A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

PILOT CLAIMED THAT IN LEVEL FLIGHT THE CYCLIC FLIGHT CONTROL WOULD NOT MOVE MORE THAN AN INCH IN ANY DIRECTION. TRIED SYSTEM 2 AND HAD THE SAME BLOCKAGE AND WENT BACK TO SYSTEM 1. NOTED TO ME THAT THE COLLECTIVE AND YAW WAS ACTING NORMAL ONLY THE CYCLIC HAD BLOCKAGE. DID NOT WANT TO BREAK PASS THE STOPPAGE IN CASE HE COULDN’T BRING IT BACK. ALL OTHER FLIGHT OPERATION ACTIONS WERE NORMAL. AFTER HARD LANDING THE SKIDS WERE SPREAD AND WHEN THE AIRCRAFT CAME TO STOP MAIN ROTOR SYSTEM CONTACTED THE UPPER WIRE STRIKE. AIRCRAFT SHUT DOWN WAS NORMAL.