Applicability: Piper PA-18 135hp, PA-18A 135hp, PA-18 150hp, PA-18A 150hp, PA-20 135hp, PA-22 135hp, PA-22 150hp, PA-22 160hp, and PA-25 TITLE: Piper Winterization Supplement to Airplane Flight Manuals Piper Report No. 790 2 pages This manual is a...