The Antonov An-28 is a twin-engined light turboprop transport aircraft, developed from the Antonov An-14M.
It was the winner of a competition against the Beriev Be-30, for use by Aeroflot as a short-range airliner.
It first flew in 1969.
A total of 191 were built and 16 remain in airline service as at August 2015.
After a short pre-production series built by Antonov, it was licence-built in Poland by PZL-Mielec.
In 1993, PZL-Mielec developed its own improved variant, the PZL M28 Skytruck.
Production was transferred to PZL-Mielec in 1978
The An-28 is similar to the An-14 in many aspects, including its wing structure and twin rudders, but features an expanded fuselage and turboprop engines, in place of the An-14’s piston engines.
The An-28 first flew as a modified An-14 in 1969.
The next preproduction model did not fly until 1975.
In passenger carrying configuration, accommodation was provided for up to 15 people, in addition to the two-man crew.
The original Antonov designation for an enlarged, twin-turboprop version of the An-14.
An-28 Twin-engined short-range utility transport aircraft, three built.
An-28 RM Bryza 1RM
Search and rescue, air ambulance aircraft.
An-28 TD Bryza 1TD
Variant made in Poland with Pratt & Whitney PT6 engines first flown 22 July 1993.
Original variant, built under Antonov licence, with PZL-10S (licensed TV-10B) engines.
PZL M28 Skytruck
Development variant with redesigned fuselage and wings, new Pratt & Whitney Canada engines, new (Western) avionics, 5-blade rotors, and some other minor changes.
PZL M28B Bryza
Militarized variants used by Polish Air Force and Polish Navy, similar to Skytruck, but with PZL-10S engines.
Uses partially retracting landing gear to avoid interfering with its radar.
PZL M28+ Skytruck Plus
Prototype of new lengthened variant with more internal space, not in production.
Variant flown by USAF Special Operations Warfare Centre.
Similar to Skytruck, but with Pratt and Whitney PT6A-65B Turboprops.
The USAF has started retiring the aircraft.
By June 2015 eleven out of 16 aircraft were stored.
MC-145B Wily Coyote
In May 2021, the U.S. Special Operations Command (SOCOM) awarded a contract to Sierra Nevada Corporation (SNC) to demonstrate the MC-145B as part of the Armed Overwatch program, which is seeking to acquire a new manned light attack aircraft to support U.S. special operations forces in permissive environments.