ALES a. s.

The ALES a. s. company was founded in January 1997, and it has its registered office in Trenčín. It has established itself as an important supplier of air traffic control systems and of other special systems not only in the Slovak Republic but also abroad. During its existence, the company has acquired a strong presence in the defence sector. It has been a member of the ICZ group since 2008 when it became a 100% subsidiary of D.ICZ Slovakia a. s.


Company address: Soblahovská 2050, 911 01 Trenčín, Slovak Republic
Company ID No.: 36293440
VAT ID: SK7120000162
Incorporated in: Commercial Register kept by the Regional Court in Trenčín, Section Sa, Insert No. 10001/R
Telephone: +421 326 582 580

ALES, s.r.o.

The ALES, s.r.o. company was founded in June 1993. It focuses on the development, production, installation, and servicing of both civil and military systems of air traffic control (ATC/ATM) as well as on systems supporting air force command and control processes (C2). It has been a member of the ICZ groups since 2008.

Company address: 1718/10 Na hřebenech II St., Nusle, 140 00 Prague, Czech Republic
Company ID No.: 48208388
VAT ID: CZ699000372
Incorporated in: City court in Prague, Section C, Insert No. 262972
Telephone: +420 222 271 111



ALES a. s.

ALES, s.r.o.


ALES – 30th anniversary of the founding

From  19.1. to 20.1. 2023, we celebrated the anniversary of the founding of our company in the High Tatras, at the Sliezsky dom. ALES was founded in 1992 by ATM experts and continues successfully with companies in the Slovak Republic and in  the Czech Republic, as...

Reconstruction of ANS I consoles for HungaroControl

In December 2022,  ALES a.s.  completed the project for HungaroControl Zrt. in Budapest. The contract was signed on June 17, 2022, followed by production, completion of input materials and installation. For a Hungarian provider of air traffic services, ALES a.s....

ALES successfully completed the contract “LETVIS upgrade”

In recent days, the company ALES, s.r.o. successfully completed the contract of the Ministry of Defence of the Czech Republic from 29/03/2021 “LETVIS upgrade”, on which it collaborated with the Military Technical Institute. The subject of the contract was...

Expansion of the LETVIS SIM air traffic generator with the AGDL

In autumn 2022, another project of ALES a.s. for a stable customer: Air traffic services of the Slovak Republic was successfully completed.  The contract was signed in 2021 and deployment at the customer’s site with successful testing took place in August 2022....



ALES company established


world’s first joint fusion of alliance and post-Soviet radar systems


first installation of LETVIS® – ATM/ATC system; first ATCO simulator delivery


first international contract for LETVIS® – ATC/ATM system delivery


first installation of SEKTOR VS – C2ISR system; first installation of Search and Rescue system – LETVIS® SAR; first delivery of air defence automated command post


first delivery of national stationary center for air operations management


integration of national air command and control systems into NATINAMDS (NATO Integrated Air and Missile Defence System)


first delivery of automated fire command and control system – ASTRA


acquisition by ICZ Group and formation of ICZ Aerospace and Defence business unit


ATC system for AERO Vodochody Aerospace – Czech Republic


ATC TWR system for Georgian Sakaeronavigatsia; L4444 implementation in LETVIS® and SEKTOR VS systems; first delivery of mobile air operations management center


integration of national interfaces into NATO ACCS system


ATC project for Nepal, first with NEC Corporation; beginning of the first phase of integration of regional CIV/MIL services; new generation of ATC/ATM system – ICZ LETVIS® development


ATC system and simulator for Georgian Sakaeronavigatsia; delivery of hundred consoles for Hungarian HungaroControl


supply of 175 ATCO Consoles for Hungarocontrol, Hungary


modernisation of ATCO Simulator and expansion of the simulator with Mode-S processing at the General M. R. Štefánik Armed Forces Academy


modernisation of the classroom of the ATM / ATC LETVIS system at the University of Defense, including the donation of SW licenses in the value of CZK 3,000,000


supply of main and backup ATC System and ATCO Simulator for Tribhuvan International Airport (KTM), Nepal


supply of ATC LETVIS System and TWR Simulator for Hazrat Shahjalal (DAC) a Shah Amanat (CGP) International Airport, Bangladesh


successful certification of new generation ATM/ATC ICZ LETVIS System


25 years of successful operation of ALES on the market of ATM / ATC Systems and C2 Systems of the Air Force and Air Defense


technical support of SKY AVENGER International Excersise, 21. Tactical Airforce Base Čáslav


completion of second stage of Civilian and Military Area Air Traffic Control services integration in the Czech Republic


gained the prestigious ZLATÝ IDET award for Common Operational Picture of Command and Control Systems of Ground and Air Forces Solution with the highest level of communication protection


supply of main ATC LETVIS System and ATCO LETVIS Simulator for Kamuzu International Airport (LLW), Malawi


modernisation and expansion of ATC LETVIS System at Tbilisi (TBS), Kutaisi (KUT) and Batumi (BUS) International Airport