The busy North Sea oil and gas rig transportation sector lost nearly a third of its capacity on October 23, after CHC Helicopter suspended all flight operations using the Eurocopter EC 225. The ban, pending further investigation, came after a company Super Puma ditched in the North Sea off the coast of Scotland the day before. CHC competitors Bond and Bristow also grounded their Super Pumas after the incident.
The aircraft suffered a cracked gearbox shaft, according to the UK’s Air Accident Investigation Branch.