How can you get a airplane on Liberty City stories cheats?

Um... Well I'm Sorry To Tell You, But You Can't Fly Airplane's At All In GTA IV., But What You Can Fly Is The Annihilator. The Annihilator Is A Police Helicopter Equipped With A Machine Gun Turret, This Thing Will Blow The Crap Out Of Anything In Your Way!

P.S. If You Like To Fly Airplane's And Have A Larger Selection of Vehicles I Suggest You Play Saint's Row 2...