Leonardo (Aermacchi) M346 Master
In the 1990 Yakovlev and Aermacchi jointly developed a jet trainer slash light fighter aircraft. In the end both companies went their own way, each taking the design further. Aermacchi (now known as Leonardo) made the M346 Master of it, Yakovlev the Yak-130.
The M346 has - apart from the Yak-130 sibling - a large resemblance to the Kawasaki T-4 and Alpha Jet, but has a mid-wing configuration. These wings have a swept leading edge, but a straight trailing edge. The leading edges have extensions until the front seat. Where they connect to the wings the M346 has small fins, pointing up like winglets.
The student and instructor sit behind each other, under a canopy that opens as a single piece, sideways. The nose is pointed. The air intakes are just behind the canopy, below wing leading edge extensions. They are rectangular of shape when seen from the front, and at a slight angle compared to the air flow when look at from the side (like on the T-4).
The air flow channels are directly attached to the wings, without space in between. The exhausts are placed below the tall vertical stabiliser with a hooked transition. They are without externally visible pipes. The horizontal stabilisers have a slight anhedral. At the base of the vertical stabiliser is a small air inlet. Finally, the landing gear has all single wheels, with the nose gear retracting rearward.
This is the basic training version, simply designated M346. In Italian service it is known as T-346A though. It was also offered to the USAF as a replacement for the T-38. This version was named T-100.
M346FA & M346FT
Versions capable of carrying weapons under the wings are designated M346FA (Fighter Attack) ad M346FT (Fighter Trainer). The former is a dedicated fighter, while the latter can switch roles.
Confusion possible with
Originating from the same design, it is logical that the M346 and Yak-130 look very much the same. The easiest difference to spot is the landing gear and its doors. The Yak has a trailing link gear, while the M346 has straight legs. Also the nose gear doors are smaller on the Yak and the main gear doors are on the outside when extended. Additionally, the Yak has no fins/strakes on top of the wing, at the leading edge extension, no inlet at the base of the vertical fin and the attachment of exhaust to the rear fuselage is with a curved transition.
The M346 and T-4 both have a realitively large vertical stabiliser and similar air intakes. The M346 is a mid-wing aircraft though, while the Kawasaki T-4 has high mounted wings. Also the T-4 has no leading edge extensions of the wings, but has visible exhaust pipes.
The main difference between the Alpha Jet and M346 is the space between the wings and the engine nacelles. Also the air intakes of the Alpha Jet are semi circular, and the canopy of the student and instructor open separately.
PZL I-22 Iryda
Like on the Alpha Jet above,on the Iryda there is space between the wings and engine nacelles. Additionally, the air intakes of the I-22 are closer to the wing leading edge.
In particular the two-seat variant of the Su-25 is similar to the M346FA, but most versions have a single seat. Also notable are the nearly straight wings and more triangular shaped vertical stabiliser.