Offer

Wojskowe Zakłady Lotnicze Nr 4 S.A. (Military Aviation Works No. 4 JSC) has been successfully operating in the aviation technology sector since 1951 and is considered vital part of Polish Airforce and hence Polish Defense System.

Currently WZL-4 S.A. core business is providing maintenance, repair and overhaul (MRO) services of:

* turbine engines for military aircrafts,
* turboshaft engines for helicopters,
* accessories and assemblies to aforementioned engines,
* engines’ ground testing of commercial and military aircrafts.

 

The company also performs: maintenance, repair and overhaul of low-power turbine propulsive systems, starter engines and generators as well as diagnostics, overhauls and production of parts/units for aeronautical applications and in-house and on-site repairs, the latter courtesy of our mobile teams.

CURRENTLY SERVICED

MRO process of propulsion systems consists of six main stages which performed correctly in accordance with technical regulation norms guarantee full efficiency of  engine and TBO (time between overhauls) renewal. These are:
STAGE 1

disassembling of the engine

STAGE 2

washing & cleaning of parts

STAGE 3

inspection & evaluation of parts

STAGE 4

overhaul

STAGE 5

assembling

STAGE 6

test runs

This sequence not only relates to overhaul of the whole engine but also to its accessories as well as low-power turbines and starter engines.
Usually MRO of engine lasts from 5 to 7 months and the whole process is overseen by company’s quality control department.
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MRO workshops
Performs stages: 1/2/3/4/5/6
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NDT workshop
Performs stage: 3
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Plasma spray & lab workshop
Performs stage: 4
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Galvanic workshop
Performs stage: 4
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Mechanical workshop
Performs stage: 4
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Jet engines' test center
Performs stage: 6
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Metrological laboratory
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Technologies and processings used during engine overhaul and repairs are complex and unique rarely utilized outside of aviation sector. The whole MRO process is conducted in accordance with technical regulations that norm its course and conditions.

Quality of performed overhaul depends not only on modern machinery park but also and maybe even most importantly on qualified and well-trained personnel.

WZL-4 through 67 years of its existence and providing MRO services for aviation sector gained a lot of know-how that is passed to next generations of employees therefore company is able to guarantee world’s highest quality of work.