The square fuselage cross section makes the nickname flying shoebox quite fitting for the Short Skyvan. This fuselage is matched to braced, high mounted wings, an H-tail and a fixed landing gear with all single wheels. The engine nacelles are tiny.
Short SD3-30 (Shorts 330)
The Shorts 330 has the same basic configuration as the earlier Skyvan, but is bigger, has a more pointed nose, has more cabin windows, bigger engne nacelles with exhausts on the side and a retractable landing gear. The main gear retracts in streamline pods next to the fuselage.
The stretched version of the Shorts 330 has a single vertical stabiliser, so it is more conventional than its predecessor. Still the main feature are kept: the square fuselage cross section, the strut braced wings and the main landing gear retracting in streamline pods.
The Sealand amphibian has typical rounded rectangular cabin windows. The main gear retracts in the side of the fuselage, somewhat diagonally. Finally, it is equipped with inline piston engines.
SIAI Marchetti SF600 Canguro
The Canguro has long, non-tapered wings mated to a square cross section fuselage. It also has a fixed gear, sometimes with streamlined fairings over the wheels. The main gear has double wheels and is attached to small stubs at the bottom of the fuselage. (photo: Fsel55/WikiMedia)
SIAI-Marchetti S211 & Leonardo M345
This basic jet trainer is looks a bit like a small Kawasaki T-4 or Alpha Jet, but then with one engine. There are semi circular or rounded rectangular air intakes, and the wings directly are attached to the air channel. The exhaust pipe is at the very end of the fuselage.
This basic trainer is known for its sleek design with bubble canopy over the side-by-side cockpit. Tip tanks are standard, as is the retractable gear. Most were delivered to military operators, but a civil version is available as well.
Soko G-4 Super Galeb
The Super Galeb is similar to the BAe Hawk, including having horizontal stabilisers with anhedral and swept wings. The leading edge of the vertical stabiliser is not as curved though. Also the forward part of the canopy consists of a front and two side panels.
Stearman (Boeing) 75 (PT-13/PT-17/N2S)
This primary trainer has a radial engine up front, sometimes enclosed with a cowling, but often open. The main gear has single, streamlined struts. Finally, the vertical stabiliser has a rounded triangular shape, with a forward swept trailing edge.
The Stearman 4 is a radial piston engine biplane, that was often used for mail transport. The lower wing is staggered and has a shorter span than the upper wing. Their wingtips are rounded. The vertical stabiliser has sharper corners and straight edges, making it nearly rectangular.