A preliminary report by the Accident Investigation Bureau (AIB) in Nigeria has found a fatal offshore helicopter crash may have been caused by a malfunction of one of the aircraft parts.
The crash, which happened last month, caused the death of two crew members and four passengers on board.
There had been 12 people on the helicopter when the incident happened.
Scotland's top law officer will have to wait until the end of the year to find out if prosecutors can get early access to the black box from a doomed helicopter.
Four oil workers died when the Super Puma AS332-L2 aircraft plunged into the sea off Shetland in August 2013.
Lord Advocate Frank Mulholland launched a legal challenge at the Court of Session earlier this year to try to speed up an investigation into the tragedy.
