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With the help of original tooling, specialist knowledge and decades of experience of we are able to repeatedly succeed in avoiding the high cost of replacing parts when they do not need to.  To achieve this we measure, gauge, compare and test and make extensive use of our excellent engine diagnostic capabilities.  As a result, we are able to reduce cost per overhaul whilst keeping to the highest quality keeping the turn-around-time as promised for an on-time delivery.


  • Engine disassembly / assembly services
  • Parts & accessory / ancillary repair
  • Engine component inspection and testing
  • APU overhaul
  • Hydraulic lock repair
  • Engine modifications
  • Engineering support
  • Engine bench testing
  • Documentation

We are capable of overhauling many of the accessories found on most radial engines in service today.  Our component library, mandatory part replacement database, functional test limits and our stringent inspection procedures ensure that product integrity remains optimal.


  • Starters
  • Generators
  • Sync breakers / generators
  • Relays
  • Regulators
  • Actuators
  • Motors


  • Fuel pumps
  • Boost pumps
  • ADI regulators
  • Fuel switches
  • Drain valves
  • Feed valves
  • Selector valves
  • Heater cans
  • Igniters


  • Actuators
  • Pumps
  • Cylinders
  • Regulators
  • Accumulators


  • Regulators
  • Pressure switches
  • Selector valves
  • Pumps
  • Pressure valves
  • Thermostats
  • Screen assembly
  • Relief valves
  • Actuators

We overhaul and repair on a broad range of fuel system, ignition, and rotable accessories. We have been supplying accessories to civilian and military organizations around the world for over 20yrs. Our services are conducted and inspected by specialized technicians using the highest standard of calibrated tools, equipment and machinery.

We either stock or can source the following types of engines and can offer them in used, overhauled/0-timed or part-exchange condition -

  • Ivchenko AI-14RA 9-cylinder radial piston engine (260hp)
  • Vedeneyev M-14B 9 Cylinder Radial Engine (300hp)
  • Vedeneyev M-14P 9-Cylinder Radial Engine (360hp)
  • Walter M601-B Turboprop Engine (760hp)
  • Shvetsov ASh-62IR 9 Cylinder Radial Engine (1,000hp)

Many of our enquiries are also about repurposing these engines and we are frequently asked to supply items for museums, universities, experimental aircraft and many for non-flying applications. 

Ivchenko AI-14RA 9-cylinder radial piston engine (260hp)

The Ivchenko AI-14 is a 9-cylinder, air-cooled, radial piston engine designed in the Soviet Union.  Its main variant is the AI-14R, which underwent state trials in 1950 and was used in many types of light aircraft.  Several thousand were built.

A licensed version of the AI-14R, (currently AI-14RA), has been produced by WSK-Kalisz in Poland from 1956 until 2007.  

The AI-14RF was a variant uprated by Ivan Vedeneyev to 300 hp. Its further development is the Vedeneyev M-14P family of engines.  

We currently have limited AI-14RF engines available

Vedeneyev M-14B 9 Cylinder Radial Engine (300hp)

Typically for the Yak-12/12M or can be mounted on the PZL-104 Wilga providing excellent all round performance.

It is largely the same as the M-14P except it delivers less horsepower, is more economical, has a different carburettor and a fixed, as opposed to variable pitch propeller.  This can delivers many operational benefits compared to the AI-14 and M-14P's.

This engine can also be supplied with or without an alloy AV-14 3-blade fixed pitch propeller.

We currently have several M-14B engines with V530 (3m) and AV-14 propellers available 

Vedeneyev M-14P 9-Cylinder Radial Engine (360hp)

Many Yakovlev aircraft types have the M-14P powerplant fitted e.g. Yak 50's, 52's, 18T's, 55M's.

It is an excellent engine, originally designed in Ukraine with renowned robustness and reliability.  It offers excellent power to weight ratio & delivers an impressive vocal tone.  

Although the standard M-14P/V530TA-D35 combination is quite sufficient, some owners prefer to upgrade to an M-14PF with 3-blade propeller for that little bit of extra performance in reserve for improved cruise, climb and STOL performance.

We currently have a limited stock of M-14P engines

Walter M601 Turboprop Engine

After a significant research period, Vertical identified the M601 range of turboprop engines as the ideal powerplant to power its new aircraft 6-seat T-1 aircraft.

The light weight to high power ratio provides sufficient power to lift 6-people comfortably away from grass fields and lakes and achieve a cruise of circa. 320 km/h.

The powerplant is well established and is often found fitted to, amongst many others, the L410 aircraft.  Modern equivalents include the renowned Pratt & Whitney PT6.

We currently hold M601-B stock only

Shvetsov ASh-62IR 9 Cylinder Radial Engine (1,000hp)

The Shvetsov ASh-62 is a nine-cylinder, air-cooled, radial aircraft engine produced in the Soviet Union and often found mounted on the Antonov An-2 range of aircraft.

Over 40,000 of these engines were built, many of which are still in operation today.

The ASh-62 was a development of the Wright R-1820 Cyclone that had been built in Russia under licence as the Shvetsov M-25, the main improvements including a two-speed supercharger and a more efficient induction system. 

We currently hold a small stock of ASh-62 engines


Mr Alex Berry, Director
20-22 Wenlock Street
London, N1 7GU
United Kingdom

Office hours: 09:00-17:30 GMT
Mobile: +44 (7475) 220 029 (English)

Mr Sergei Aleksandrov, Director, Yak-aviation
ul. Aeroflotskaya
Kharkov, 61031

Office hours: 09:00-17:30 EEST
Mobile: +38 (5777) 54553 (Russian)

Whether you are looking for small parts, an aircraft, cockpit cowlings, propeller blades, parachutes, cockpit glass, undercarriage legs, doors or any other part for a Russian or Eastern European aircraft then why not give us a try.

If we do not carry the stock you are looking for, our extensive network of contacts through Ukraine, Russia and Poland can be conveniently tapped to locate what you are looking for.

Office hours: 09:00-17:30 GMT


Thanks for contacting Yak-Aviation. We will get back to you as soon as possible.