Embraer KC-390 takes maiden flight
I'm sure you don't need to ask why Boeing still hasn't decided if it's C-135, EC-135, KC-135, NC-135, OC-135, RC-135 or WC-135?
Embraer are using K for the same reason:
(Source: Embraer's English Language Brochure, 2023)
(Tongue securely stowed in cheek)
Embraer are using K for the same reason:
THE C-390 MILLENNIUM CAN BE QUICKLY CONFIGURED FOR AERIAL REFUELING AS A TANKER (KC-390) AND AS A RECEIVER AIRCRAFT
(Tongue securely stowed in cheek)
One might well think so - but then one would be wrong.
While the FAB, Hungarians, Portuguese, etc are celebrating the arrival of their KC-390s, recent order announcements (Czech, for example) have conspicuously referred to the aircraft as the C-390, with no suggestion that it will have an AAR role.
Even Embraer seem to be back-pedalling on that capability, to the extent that they even announced the designation change making no mention of the K role:
While the FAB, Hungarians, Portuguese, etc are celebrating the arrival of their KC-390s, recent order announcements (Czech, for example) have conspicuously referred to the aircraft as the C-390, with no suggestion that it will have an AAR role.
Even Embraer seem to be back-pedalling on that capability, to the extent that they even announced the designation change making no mention of the K role:
