USAF, RC-135 or similar ELINT operation(?) working MacDill on 8993 and Albrrok on 11176/11246.
[If anyone can identify the type I would appreciate it!]
BB 654 37n 15w 00:17 F310, Mach .80, SelCal FMAC, requesting oceanic clearance to Barbados
Balair, DC-8-63, HB-IDZ, working Santa Maria on 5610
[Photo: HB-IDZ at Zurich on 28/09/1985 © Derek Gaynor]