No Lockheed Model 10 Electras were harmed in the making of this film. In fact, no Model 10s appear in the film. From what I can see in the trailer a Lockheed 12 "Electra Junior" was used for the flying scenes. Although the Model 12 has the same twin-tail configuration as the Model 10, it's a much smaller airplane with a very different profile than an Electra. They may have used another 12 for the Luke Field wreck - but maybe not. More on that in a minute.
As Marty correctly notes, the 12 used in the flying scenes was flown to South Africa from France. And as Monty correctly notes, they seem to have the orange paint about right. But after having gone to all that trouble, they put the iconic loop antenna on the underside of the nose instead of over the cockpit. There are, of course, many other inaccuracies in the aircraft's configuration but this one is so glaring and, one would think, easy to get right, it makes you think the historical accuracy advisor was out to lunch. Apparently the continuity supervisor was with him because the 12 used in the Luke Field crash scene has the loop in the correct location.
Looking at the crash sequence in the trailer, it appears to be a real airplane. I'm quite sure it's not all CGI. My suspicion is that that they started with a Model 12 but modified the cockpit section. (The windshield is too big for a 12.) The sparks are probably CGI but it looks to me like they did yank the gear out from under a real live Model 12. Of course, the crash shown in the trailer is nothing like the actual Luke Field wreck. The real accident was much wilder.
Nit-picking this stuff is pointless but irresistible.
Ric