Where Is The Biggest Plane In Gta San Andreas And How To Get It?

The big airplane is in the las ventures airport and it is very difficult to get it  I go with the jetpack so I get it

The biggest plane in gta sa is at the airport in las venturas in a big hanger

I don't know I want it and I cannot get when I go to the airport I did not see a thing
 

I do have a licence but when I go there open the big door no big plane there.