IFR flight planning system

Accurately and efficiently

Cockpit News

Aerospace Tech Week, Munich

Our company participated in the Aerospace Tech Week conference in Munich, which took place on April 17-18, 2024.At the conference, we presented our portfolio of flight planning products and services.It was another opportunity for us to meet our existing customers and introduce ourselves to potential new customers. We also had the opportunity to network with […]

15th Annual Flight Operations Conference

Our company attended the Flight Operations Conference in London on 29 and 30 November 2022. The conference provided a valuable opportunity for us to meet with our customers and to introduce ourselves to potential new customers. At the conference, we showcased our portfolio of  our products and services, which are being developoed for more than […]

NAVsystem: good news for flight crew

NAVsystem now allows to uplink flight plan directly into the FMS. NAVsystem has recently been enhanced by addition of datalink service interface, hence allowing the uplink of FPL directly into avionics. Sending FPL into the FMS over ACARS significantly reduces flight crew workload in preflight phase and also cuts down the probability of erroneous entries. […]

What is NAVsystem?

NAVsystem is a software solution for flight planning and generating PDF flight briefing packages. Our solution fits a wide range of operations, whether you are a scheduled, charter or cargo carriers, business jet or even a military operator.

NAVsystem integrates tools for route construction, OFP calculation and compilation, ATC FPL management and PDF briefing generation.

There are two main parts that create the complete solution. The first one is a desktop application for dispatchers for fast and efficient flight planning.
The second being a web-based interface for easy access to flight briefing packages.

The system natively runs on MS Windows but can also can be set up in MacOS environment using Parallels Desktop application.

NAVsystem upgrade 4.0

NAV Flight Services s.r.o. proudly introduces NAV system® 4.0 – already the fourth version of its well established flight planning and ops control tool to further enhance the flight planning experience. The new version features a brand new advanced flight calculation interface, which provides users with more definitive calculation process with a little room for uncertainty in calculations.

NAVsystem functions


The Autorouter finds a suitable route for your flight in no time and immediately presents a preliminary fuel  and time overview of fuel together with a cost summary, including e.g. overflight charges.

All routes created by our system automatically comply with Eurocontrol RAD/CDR/DCT and CPLC restrictions and are checked to be Eurocontrol valid. You can also easily search for a route with up-to-date NAT tracks, choose ETOPS/Adequate Enroute Alternate or create an RCF procedure scenario. Moreover, you still are able to set additional criteria for the Autorouter to follow, such as avoiding routes, intersections, FIRs/UIRs or forcing use of a specific routing for a segment of the flight.

The Autorouter uses an advanced algorithm to find the optimal route using the latest forecast of upper wind and temperature. You can also browse through the database of more than 4 million routes flown by other operators or utilise one of the Eurocontrol proposed routes.

Fine tune your route interactively on the map or text-edit it manually directly in an FPL field 15. All your routes can be saved, organised in a folder structure and, most importantly, easily shared with your fellow dispatchers.


OFP calculations are based on an accurate performance model of the particular aircraft.

ETOPS, SET-OPS, RCF, 3% ERA, „ADEQUATE“ and isolated aerodrome are some of the scenarios you can utilise.

These are supported by a number of rules for determining the required fuel (final reserve, contingency, FMC minimum reserve, etc.)

Therefore, you can easily determine the maximum possible payload and analyse the advantages of transporting fuel.

Our clients can choose their own OFP layout. Even better news is that NAVsystem supports multiple OFP templates for a single operator.

You can quickly compare all the costs between different flight profiles and routes, including flight costs and overflight charges.


The OPS board gives you a clear view of scheduled flights and their status presented either as a table or a timeline.

The displayed flights can be filtered using multiple criteria.

You can easily file an ATC flight plan and modify it using CHG, DLA, CNL messages.

Allocated Eurocontrol slots are automatically displayed and you can send slot related messages (RFI, SWM, SPA, SRJ,..) directly from the OPS board.

You can use the OPS board to easily recalculate the flight with altered parameters and the most recent forecast.

NAVsystem also includes a gateway for sending messages for quick AFTN communication.


By using the NAVsystem web briefing, you can put together your PDF briefing pack containing the current OFP, FPL, NOTAM, OPMET messages, upper wind charts, significant weather charts and vertical section of the flight profile.

FIR NOTAMs are narrowed down to those relevant to the current flight path, which prevents the display of superfluous information.

Related flights can be grouped into one PDF to avoid duplicate information.

You can use the briefing application to view forecast wind, temperature, humidity, clouds and visibility at multiple flights levels.

The web briefing also includes a module for ATC FPL management and mass & balance.


Years of experience working with airlines taught us that every company is unique and has its own specific needs.

Our development team is ready to address these specific needs, whether it is the development of customised modules, reports, data import solutions or direct links to other systems you are already using.

It is this integration that considerably speeds up work and prevents errors in re-entering data. We are well aware of this and as such are very open to integration with both third party commercial systems and also those you may have developed in-house.


We know that the availability of data in flight planning is key to the operation of every airline. NAV uses SLA to contractually guarantee the availability of software and data.

We are using state of the art server infrastructure to make data available and provide services, while we keep multiple data sources and storage locations and automate the monitoring of services and import of data.

Our data centre has 4 independent power sources and 3 diesel generators that ensure an uninterrupted supply of electricity.

Connectivity is provided by a fiber-optic network of multiple independent directions and data is regularly backed up in a geographically separate data-centre.


We offer complete initial training both online or on our premises. We can also organise a training directly at your own facility.

Furthermore, refresher training, new features training and training on selected topics according to your requirements are also available.

Whatever your training needs, we are able to provide and connect theory with practice -> NAVacademy.


Our specialists are available 24/7. Contact them at any time and with any technical issue of the system.

Critical issues threatening the operations of our customers are resolved immediately (24/7) at level 2, non-time critical requirements and suggestions are resolved during working hours at level 3.

Why choose NAVsystem ?

WE ARE CONSTANTLY IMPROVING THE NAVSYSTEM, we incorporate aviation regulatory requirements, as well as new trends in IT.

You do not have to worry about timeliness and the relevance of calculations in aviation regulations.

NAVsystem contains advanced

Have full control of your spendings.

NAVsystem includes

Save time with planning routes.

NAVsystem has a

Save your dispatchers time
and with it your costs.

We contractually

You do not have to worry about the availability of SW.

We provide a

You can try the system without payment.

We provide a

Save time in the transition to another system.

We are open

Save time.

We provide H24/7 service.

When in need, you can rely on us at any time.

NAV Flight Services
last year statistics



Generated OFP


Flight hours



Kg of saved fuel


Uplinks to the plane

Want to try NAVsystem yourselves?

Enjoy a 1 month of NAVsystem completely free of charge. Please fill in this questionnaire to get your TRIAL version login and experience flight planning at its best.

Frequently asked questions

How much does NAVsystem cost?

Our policy is a single monthly service fee. There is also a one-time initial implementation fee.

The monthly service fee includes the provision of software, continuous data updates, user support and new software updates.

The cost of implementation depends on the complexity of the entire process – especially the number of processed aircraft performance models and complexity of OFP appearance configuration and fuel policy.

We are happy to give you a price quote.
Simply fill in the contact form and our sales team will contact you with details.

What are the hardware and software requirements?

NAVsystem can be used with Windows 7/8/10/11 operating systems. There is no need for a high performance computer to run the software.

The minimum hardware requirements are a 1GHz single-core processor, 2 GB of RAM and 1 GB of free space on the hard drive.

Can NAVsystem be used on computers with MacOS?

Although NAVsystem is primarily developed for Microsoft Windows environment it can be used on MacOS computers using Parallels Desktop.

What happens after I choose your system?

Should you be interested, we will send you:

1. A price quote based on the size of your fleet

and requirements for implementation – OFP and the performance data of your fleet.

2. We will agree on the final OFP template and time for final implementation

(the date you start using NAVsystem).

3. We prepare the contract based on the price quote

and we agree on the payment terms.

4. After signing the contract, we will commence the implementation phase.

You will be kept informed about all steps and we will work together towards bringing the system live. You will be well involved in the whole process, e.g. in verifying the performance data of your aircraft.

What´s the data source?

NAVsystem solution includes full delivery of operational data which are obtained from reputable suppliers.

Navigation data are supplied by NAVBLUE and in case of client’s preference, we can also use navigation data from JEPPESEN.

NOTAM data with global coverage are supplied by The Weather Company, IBM Business, which also provides certain meteo data. To complete the meteo package we use those from the primary source WAFS (World Area Forecast System) through the Czech Hydrometeorological Institute.

We use IATA database for TNC data and overflight charges. AFTN address and the entry /exit points for the European “FRA” are taken directly from the AIPs. Aircraft performance data is provided by the client and compilled to the NAVsystem internally.

Our clients

NAVsystem is used by all types of operators / private and business operators, commercial airlines, cargo airlines and military clients.

We appreciate any feedback
or recommendations from our clients

With their approval, we publish some of them:

Evaluation of the change to NAVsystem

„The NAV system changes our approach to flight planning. As always in life, every change is challenging, but the more we work and plan in the NAV system the more priceless results we can accomplish due to this change.

As for the system as such – we appreciate greater clarity and the possibility of planning more demanding routes, and last but not least, the use of the NAV system leads to the improvement of our fuel policy, thanks to the function of comparing fuel prices and evaluating whether fuel tankering will be advantageous in all respects or not.

Finally, I would like to thank the gentlemen from NAV, Jan Vaňous and Petr Frolík, for their professional help not only in setting the performance data.“

Vendula Janulíková

OPS Airstreamjets & Silesia Air

NAVsystem evaluation from DSA

„…In our view, the main benefits are the precise fuel consumption model and route optimization options. On behalf of DSA, I can recommend all airline and general aviation operators to use the NAVsystem..“

Read the entire post

Martin Hejra

Flight operations officer for DSA, Czech Republic

„NAVsystem makes life on the flight deck bearable“

The system is easy to understand, nice to use and it is a veritable tool that helps to a great extent on fuel management. The Flight Planning system makes interfacing with Euro Control on long haul flights easy. The Air Traffic Control flight plan can be filed easily, Weather information can be accessed easily, and the Flight Dispatchers confirm that the graphics makes the tool very easy to understand and use. The pilots attest to the fact that it is a good planning tool and makes life on the flight deck in terms of work load bearable.

Adeyemi Adebayo

Dana Airlines Ltd, Nigeria