A North Sea helicopter with seven people on board collided with a gas platform 50 miles off Great Yarmouth on Sunday, it has been revealed.
No-one was injured and the pilot was able to land safely.
An air accident investigation has begun after the CHC Scotia helicopter landing on the Leman 27 Alpha platform operated by Perenco collided with a crane.
John Sewell, a Perenco spokesman, said a helicopter suffered minor damage when its tail rotor collided with a crane.
The pilot was able to land safely despite the damage.
On board the routine flight with the two pilots were five maintenance crew who were being transferred to the Leman platform for the night from an unmanned installation.