Pan Am Flight 103 from London to New York exploded in mid-air over the Scottish town of Lockerbie in December 1988.
All two-hundred-and-fifty-nine people on board were killed as well as eleven people on the ground.
An international investigation led to charges against two alleged Libyan intelligence agents of putting a bomb on the plane.
Libya has been subjected to UN sanctions since 1992 for refusing to hand them over.
The UN Security Council has decided to suspend sanctions if the suspects are delivered for trial in the Netherlands.
From the newsroom of the BBC World Service