I propose a modification on the CH 47 Chinook Helicopter to increase take off weight, lift off, stability near the ground on take off and ground effect or ground cushion on landings. The modification will be retractable slots on the protruding extended exterior base of the helicopter which will be attached parallel to the length of the rounded edge of the base. This modification will be a “C” shape cupping the curved surface as if it were the leading edge of a wing. The slots will be exactly as .