BBC Reports
Two models of Super Puma helicopter have been grounded for 48 hours after the latest report on the North Sea crash, which claimed 16 lives.
Industry body Oil and Gas UK said 25 helicopters in the UK offshore fleet would be affected.
Earlier the Air Accidents Investigation Branch (AAIB) said gearboxes must be inspected to check internal components.
Industry officials will meet helicopter operators on Sunday to review the situation pending new safety advice.
The grounding affects AS33L2 Super Pumas - the type which crashed on 1 April killing all on board - and the EC225LP Super Puma, which ditched in the North Sea on 18 February with no loss of life.
The decision, taken voluntarily by operators, leaves about half the total helicopters available to the North Sea industry out of action.
Full story at
BBC NEWS | Scotland | North East/N Isles | Helicopters grounded for 48 hours
This would appear to be in response to an Oil & Gas UK request, but I guess all the operators were struggling to justify flying in the shadow of an urgent request from the AAIB to carry out these inspections.