Helicopter operator CHC is to add five new aircraft to its fleet servicing operations in the UK and Australia.
It is understood that the North Sea will get two new Airbus 175 aircraft.
The order, with Milestone Aviation Group, also includes three new Leonardo AW189s.
The aircraft will be configured for ferrying offshore workers.
Karl Fessenden, president and chief executive of CHC Helicopter, said: “We are working closely with Milestone to carefully build a productive, safe and reliable fleet to meet the varying needs of our customers throughout the world.
“Milestone has been a valuable leasing partner towards this goal, with a diverse order book across manufacturers and types, and deep expertise in aircraft operational capabilities.”