According to airliners.net :
UAL130, Boeing 757-200 was enroute from Washington (KIAD) to London (EGLL), routing 49N040W at 03:04Z, at 39,000 ft., NAT Track V. At 03:24Z, the flight declared an emergency (engine out) and descended to 28,000 ft. The flight received clearance to St. John’s (CYYT) and landed safely at 05:15Z.
It was on 5616 but HF conditions are terrible. At 0323 in the archive Shanwick relays a message to Gander that the flight has declared an emergency with an engine out which Gander acknowledges and let's Shanwick deal with it as they can't hear him. There's a little bit more chatter at 0326-0327 but too weak to make out.