Incident Overview
A helicopter, which had been tied down overnight on the helideck of an offshore oil platform, was prepared for its first flight of the day. The pilot reported that the preflight inspection had been completed several hours earlier, but during the subsequent walk-around, he failed to notice that the right rear tie-down remained connected to the fuselage. This tie-down was one of four attached to the helicopter.
Details
As the pilot initiated takeoff, the secured tie-down prevented the helicopter from lifting off normally. The restraint caused the aircraft to roll over dynamically while still on the helideck. The helicopter did not depart the platform; instead, it came to rest on the deck following the rollover.
Damage Assessment
The incident resulted in substantial damage to the tailboom and the right side of the helicopter. No other details regarding injuries or damage to the platform were provided.