User blog comment:SociallyAwkwardEpic/Heists Update coming early 2015/@comment-3033467-20141216181756/@comment-13043223-20141217170529

Yeah, it's a complicated case... I'd like if it was the Hunter, but I still prefer it as a Appache.

The Hydra is assumed, as it is in the game files since the Independence day special, it was the first appearence of it in the files, you can ask this to WildBrick, so it would be too much unlikely to be another plane.

I shouldn't even say this, Rockstar is unpredictible.