Its poo because ther is no flying car cheat on the game!!!!!
Just by looking for cheat codes here on the internet.
car flying cheat L1 R1 CIRCLE X DOWN CIRCLE X
There is no cheat for the helicopter in GTA liberty city stories
there is none trust me i looked all over
cane tou have jet pack cheat on libtity store
gta liberty city stories cheats of helicopter
u have to get a cheat device for flying cars