Incident
at 61N 57W
EA31 AIRBUS 310 DLH470 - DLH470, FRANKFURT TO MIRABEL AT FL310, ACCEPTED AND CARRIED OUT ASCENT TO FL370 GIVEN FOR DLH474, FRANKFURT TO TORONTO AT FL350. LOSS OF SEPARATION BETWEEN DLH470 & SWR170 WHO WAS 5 MIN IN FRONT AT FL350, AND DLH470 & AAL47 WHO WAS 5 MIN BEHIND AT FL350. ALL A/C WERE HEADING WEST. TIME = 1652Z. ACTION = NAP.