What is the ceiling of the PPC?
From the factory, the 2-seat PPC with a 65hp engine will normally obtain around 12,000 feet with just an average size pilot, and around 8,000 feet with 450 lbs of occupants. As of July 2001, the altitude record is over 17,700 feet (I believe by Bud Gish of Alaska). With the Sport Pilot rule, you are limited to 10,000 feet MSL (above sea level) If it is a single seat Ultralight, you are not limited to the same ceiling as a sport pilot, but if you plan to go much above 12,000MSL, you will need oxygen.