READ THIS BEFORE BUYING PLEASE
This is a prim build of various shapes. It should enough for most large aircraft (should). This was based on a 737 size aircraft. I believe 747 are to big for this build.
However C-130's have a wide wingspan and high tail section so this may not be right for you.
There are two parts to this hangar. The main part and back section. You will have to line them up when placing it. This is due to the link limitation of builds at 64.
A working hangar door but note the following.
The door is a large shaped scripted prim and it extends beyond view downward. Unless you have a basement or an underground section this should not be a problem placed on the ground or solid foundations. Reshaping or trying to make cuts it will return to it's main shape when touched.
The back section is made for a door of most kinds in which you can change or remove.
You can always use a framed square hangar door system.
The hangar door texture is a bit tricky in this area. So I might recommend using a solid texture if this one is not appealing. Perhaps matching to the rest of the hangar. Anything with lines or not seemliness may not appear proper.