The production aircraft were three-seaters with fixed spatted undercarriages.
The Scub has a conventional, fixed undercarriage without wheel fairings.
The Swing has a fixed undercarriage, which may be of either tricycle or tail wheel configuration.
The AS-57 has a fixed conventional undercarriage; some have had wheel fairings, others not.
A fixed undercarriage and a brake parachute were used.
The NC.4-10 initially flew as a landplane, using a temporary fixed conventional undercarriage.
It was a low-wing monoplane with two seats in tandem and a fixed conventional undercarriage.
A fixed conventional undercarriage with a tailwheel is also available.
Other new idea was a scissors-like fixed undercarriage, with shock absorbers hidden in the fuselage.