May 26, 1999

Incident at Gander Domestic Airspace (ATS operating irregularity)

AMT8183 L101 and DLH445 A340 were on reciprocal tracks which diverged west of 50W. Both aircraft were at FL380 with an estimated passing time of 0019z. Vertical separation of 1000 feet required from 0004z until both aircraft radar identified. AMT8183 was not radar identified until 0012z. Lateral spacing between tracks at passing point was 18 NM. Update: NAV CANADA will conduct a Fact Finding Board TSB Case closed. File # A99A0071