How simple can a person get?
"Aeroplane" - Hydra: Triangle, Triangle, Square, Circle, X, L1, L1, Down, Up.
"Helicopter" - Hunter: Circle, X, L1, Circle, Circle, L1, Circle, R1, R2, L2, L1, L1.
You know, an easier way would have been to just look at the Cheats page for GTA SA.
WAIT!
Don't try and find it yourself, you might hurt yourself.
Here: Link
Refer to that page for all the cheats you may want in the future.
You know, you could of just given him the cheats without being such a smartass about it...