The term 'Piper Product' refers to a type of aircraft manufactured by Piper Aircraft, Inc. The crossword solution for this term is 'PLANE, ' which is a five-letter word. Piper Aircraft, Inc. is an American manufacturer of general aviation aircraft, located in Vero Beach, Florida. They produce a wide range of aircraft, from single-engine planes to business jets. The company has been in operation since 1937 and has produced over 144, 000 aircraft.