The Military Aircraft Works No. 4 were founded in 1952 as the Military Aviation Overhaul Base within the confines of then existing military airport Warszawa-Boernerowo. The Works started to recondition aircraft that participated in World War II such as: Jak-9P, the Jak-17 fighter planes, IŁ-10 strike aircraft and Pe-2 bombers. Specialized repair divisions were set up to perform all the necessery work to restore full operational fitness to airplanes and engines, starting from disassembly through repair processes to final tests and test flights.

In 1957 the Works were transformed from a Ministry of National Defense financed entity into a financially independent entity organizationally subordinate to the Ministry of National Defence. At that time the Works were given the name Aircraft Repair Works No. 4, later in 1982 changed to Military Aircraft Works No. 4.

On 26.10.2007 the act of commercialisation of the owned-by-state enterprise was signed, Military Aircraft Works No. 4 located in Warsaw - are from the date of 01.01.2008 transformed into the stock corporation having the authorized share capital of 54.000.000 zloty. The Management Board consists of two persons: President of the Board - Mr. Jan Piotrowski, former Director of the Military Aircraft Works No. 4, and Mr Pawel Pszenicki, former Technical Director.

The real development of the Works started with the introduction of jet technology and start up of overhauls of jet powered MiG-15, MiG-15bis fighters and IŁ-28 bombers. At that time engine overhauls began on airplanes such as: the RD-45, WK-1, WK-1A and WK-1F.

The increased demands for specialized work, introduction of newly equipped machines and diagnostic equipment also required increased service areas. During the 1960s new facilities were constructed, such as: electrical and radio systems overhaul division, aviation armament overhaul division with a firing range for aircraft weapons testing, and a test bed for jet turbine engines.

In the years 1963-1964 airplanes were no longer overhauled, concentrating primarily on engine overhauls. The Military Aircraft Works became the prime specialised facility for overhauling turbine engines. Successive aviation development required that overhauls had to be initiated on other types of engines. Thus, the Works have successively been adapted to the rapidly changing needs. The current reconditioning program includes the GID-350 engine for Mi-2 helicopters, R-11, R-13 and R-25 engines for Mi-21 and the AŁ-21 for the Su-22 aircraft.

The Military Aircraft Works No.4 already overhauled over 15.000 engines. The Works employees possess extensive knowledge and experience, as well as high moral-ethical values, which are necessary at every aviation facility.

ISO 9001:2008

On the 18th of September 2009 the Military Aircraft Works No.4 obtained new certificate ISO confirming compliance with the requirements of the ISO 9001:2008 standard.

Photos of Certificates - on the Quality Management System sub-page

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Warsaw, 27th October 2007 Commercialization Polish Ministry of Treasury informs that on 26th October 2007 the Act of Commercialisation of the owned-by-state enterprise was signed, Military Aircraft Works No. 4, located in Warsaw, are from the date of 1st January 2008 transformed into the stock corporation having the authorized share capital of 54.000.000 zloty. The Management Board consists of two persons: President of the Board - Mr. Jan Piotrowski, former Director of the Military Aircraft Works No. 4, and the Member of The Board - Mr Pawel Pszenicki, former Technical Director. Warsaw, 3rd January 2007 Industrial Security Certificate On 3rd January 2007, the Classified Information Protection Office of the Military Intelligence Services, as the result of the evaluation procedure conducted, granted the Military Aircraft Works No. 4 the Industrial Security Certificate of the second degree, valid till 2nd January 2014. Warsaw, 21st September 2005 Tests of the engine F100-PW-229 - realisation of the off-set obligations On the 21st of September 2005 Mr. Louis R. Chenevert, the president of Pratt & Whitney, gave Military Aircraft Works No. 4 the certificate allowing to perform tests of engines type F100-PW-229. The ceremony took place in the Rembertow location of the Military Aircraft Works No.4 and it was connected with the 80th anniversary of the existence of Pratt & Whitney as well as 30th anniversary of its operation in Poland. The ceremony was accented by presentation of the acceptance test of the first engine type F100-PW-229 delivered for Polish Air Forces. Adaptation of the existing Aircraft Engines Test Cell, which allowed us to obtain the certificate, gave the Military Aircraft Works No. 4 position of the first and only company in Europe and the third company in the world authorised to perform the acceptance tests of engines F-100 being the propulsion of multi-purpose aircrafts F-16. The acceptance tests in the Military Aircraft Works No.4 will be performed for all the engines which will then be installed in 48 aircrafts F-16 manufactured for Poland in the company Lockheed in Texas and assembled in WSK PZL Rzeszów. The investment of adaptation of the Aircraft Engines Test Cell to perform the acceptance tests of engines type F100-PW-229 is the effect of realisation of the off-set obligations connected with the F100 programme for Poland. But the Military Aircraft Works No.4 do not hide that the main goal is to achieve position of the European testing center for the engines F100-PW-229, offering service for all countries using the American F-16 aircrafts, with Greece among others. Photos from the ceremony Warsaw, 31st August 2005 The engine F100-PW-229 The US Government institution DCMA - Defence Contract Management Agency performed an audit in the Aircraft Engines Test Cell in Rembertów from 22nd to 23rd of August 2005. The purpose was to check progress of the adaptation works in the test cell to serve the engines F-100-PW-229. On the 25th of August 2005 there was peformed the first test of the engine F-100-PW-229 in its full power range . Now the correlation trials take place, finishing them will confirm that the Engine Test Station in Rembertów is ready to perform the acceptance tests of the engines F-100-PW-229 destined for the Polish Airforces. Warsaw, 28th April 2005 The engine F100-PW-229 On the 28th of April 2005 there was signed an agreement between WSK "PZL-Rzeszów" S.A. and the Military Aircraft Works No. 4 for execution of the acceptance tests of the enginesF100-PW-229. Signing of the agreement caused the necessity of adaptation and corellation of the new part of the engine test station. It is also necessary to train the employees and to implement the AS 9100 system standards. Photos from the ceremony Warsaw, 21st February 2005 AQAP 2120:2003 On the 21st of February 2005 the Military Aircraft Works No.4 obtained new certificate AQAP confirming compliance with the requirements of the AQAP 2120:2003 standard. Photos of Certificates - on the Quality Management System sub-page Back to the main page