OAL412, Airbus A340-300, enroute from New York (KJFK) to Athens (LGAV), received a threat shortly after departure from New York. The flight entered the Moncton Flight Information Region (FIR) at 21:33Z, and left the Gander FIR crossing 30W eastbound at 00:25Z. Aircraft monitored was conducted through the Moncton and Gander FIR?s with no unusual activities. Nil TSB.

OAL412 B747 enroute New York to Athens advised ATC that they had experienced a couple of updrafts which had caused the aircraft to climb 500 feet. COA78 DC10 was in trafiic at 34,000 feet. Separation achieved was 500 feet vertical and 8 minutes longitudinal. Separation required is 1,000 feet vertical or 10 minutes longitudinal. Traffic behind OAL412 were notified of event and no other aircraft reported the same flight conditions. TSB case closed Update : TSB file # A99A0138

BAW1114, Boeing 747, at Flt level 340 reported 53N40W at 02:13 UTC. OAL412, Boeing 747 at Flt level 340 reported 53N40W at 02:20 UTC. To re-established longitudinal separation the controller descended OAL412 to FLT level 330. The lost of longitudinal separation occurred at 40W when the required separation was 10 minutes but the actual separation reported was 7 minutes.

BAW1114 B747(GAWNE) enroute Philedalphia to London FL340. OAL412 B747 (SXOAB) enroute KJFK to Athens FL340. All traffic reporting on time track "Y". OAL412 was issued a time restriction at 50W of 0142z. Pilot reported at that time. However, confirmed time at 40W of 0220z, 3 minutes earlier than ATC time. OAL412 was cleared to FL330. No available explanation for erosion of separation.