Amateur-built S-1C with ailerons on all four wings, generally similar to S-1S.
Generally similar to S-1S. Amateur-built S-1C with ailerons on all four wings.
Amateur-built S-1C with ailerons on all four wings. Generally similar to S-1S.
Amateur-built S-1C with ailerons on all four wings. Generally similar to S-1S.