12th April 1980

BA 173 MERLIN 09:03 F470 climbing F490 to F600 SM12w 09:20, SelCal BDEG

British Airways, Concorde, G-BOAB

[Photo: at London/Heathrow on 17th October 1992 © Gerry Barron]

Unlike regular North Atlantic jet traffic, the Concorde supersonic routing's were fixed, with the westbound track being assigned 'SM', hence SM15w would be 50° 41'N 15°W and the remainder of the routing was as follows:-

SM ......50° 50'N 20°W

SM ......50° 30'N 30°W

SM ......49° 16'N 40°W

SM ......47° 03'N 50°W

SM ......46° 10'N 53°W

SM ......44° 14'N 60°W

SM ......42° 46'N 65°W

SM ......42° 00'N 67°W