Investigators found a failure in the lubrication system of the helicopter which ditched near Fair Isle.

BBC: Restriction imposed on Super Puma helicopter

Investigators have found a failure in the lubrication system of a helicopter which ditched near Fair Isle on Monday.

BBC: Super Puma ditching inquiry finds helicopter fault

The airlines say that by the end of May Rolls-Royce will be able to replace the faulty gearbox lubrication system in the engine.

CNN: A Plane Tale of Caution

The company reports that the new bubble system, officially termed the Mitsubishi Air Lubrication System (MALS), will reduce ship carbon emissions by up to 25%.

FORBES: Archer Daniels Midland & Mitsubishi Team Up To Blow Bubbles

The crew of another Super Puma helicopter ditched in the North Sea in May, as a result of a false warning over the lubrication system, a report said earlier this month.

BBC: Ditched Super Puma pilots 'feared gearbox problem'