The sole surviving example of a Spratt Controlwing unconventional light aircraft. A small series was built in the 1960/70s, some having a seaplane hull. All had a pusher engine at the rear and the wings could be moved in flight to provide control. Side-by-side seating for pilot and passenger.
The Custer CCW-5 was designed to give STOL performance by the pusher engines pulling air through the wing 'channels'. This worked OK, but the extra drag caused by the aircraft's layout cancelled out the benefits. It was intensively tested between 1953 and the 1970s, but no production orders were secured. Now preserved by the MAAM at Reading, PA.