Airco operates an aircraft maintenance and repair business serving the needs of owners of private airplanes. Flyer contracted with Airco to replace the engine in his plane with a more powerful engine of foreign manufacture. Airco purchased the replacement engine through a representative of the manufacturer and installed it in Flyer's plane. A short time after it was put into use, the new engine failed, and the plane crashed into a warehouse owned by Landers, destroying the warehouse and its contents. Airco was guilty of no negligence in the procurement, inspection, or installation of the engine. The failure of the engine was caused by a defect that would not be disclosed by inspection and testing procedures available to an installer. There was no negligence on the part of Flyer, who escaped the disabled plane by parachute. Landers recovered a judgment for damages from Flyer for the destruction of his warehouse and its contents, and Flyer has asserted a claim against Airco to recover compensation on account of that liability. In that action, Flyer will recover 
full compensation, because the engine was defective.  no compensation, because Airco was not negligent.  contribution only, because Airco and Flyer were equally innocent.  no compensation, because Landers's judgment established Flyer's responsibility to Landers. 