I know it was a refueling stop. Either way you may be interested in the 1985 Crash at Gander. 248 Troops and 8 crew members were killed shortly after take off, when the plane blew up.
http://www.fas.org/irp/congress/1992_cr/h920430-gander.htmFlying home for Christmas in 1985, three years before the Pan Am bombing, 248 American soldiers and eight crew members died when their chartered DC-8 jet plunged to earth just after taking off from a refueling stop in Gander, Newfoundland. It was the worst U.S. military air disaster ever. Icing of the wings was immediately suggested as the cause, although Islamic Jihad terrorists just as quickly boasted of blowing up the jet.
It wasn't until 1989 that an Iran-contra connection to the tragedy was revealed. Arrow Air, the charter company, turned out to be one of Lieut. Colonel Oliver North's regular arms shippers. Although most of the crash victims belonged to the U.S. 101st Airborne Division, returning from six months' duty with the multinational peacekeeping force in the Sinai, more than 20 Special Forces personnel trained for counterterrorist missions were also on board. Suspicions have recently deepened that they, like Charles McKee and the members of his hostage-rescue team on Pan Am Flight 103, were the target of an attack.
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Tragedy at GanderLot more detail at the above link.