Ok. So I get why flaps are used. But.... why on some jets does it push the jet down and on other one's it pushes the jet upwards? When the flap switch is actvated, flaps go down, making the plane baloon upwards. Why would it push the plane up? When down elevator is used it pushes the plane down. As true when I put in up elevator the plane goes up... Wish I understood air flow or aero dynamics more.. Thanks guys, Mario (Moe)