Frequently Asked Questions About NavWorx®

What is ADS-B?

The ADS-B system is a crucial component of the Next Generation Air Transportation System. It provides surveillance and situational awareness simultaneously to pilots and air traffic control facilities. ADS-B is designed to improve the safety, capacity and efficiency of the National Airspace System while providing a flexible expandable platform to accommodate future air traffic growth. 

When do we need to equip?

Aircraft that fly in controlled airspace require ADS-B OUT performance by January 1, 2020.

What is ADS-B IN and ADS-B OUT?

An ADS-B device (either UAT or 1090ES) automatically transmits its GNSS GPS position and other information once a second in the form of an ADS-B message. This is referred to as ADS-B OUT. The ADS-B device may also receive TIS-B, ADS-R and/or FIS-B messages from the ADS-B ground stations and ADS-B messages from other ADS-B like-equipped craft.  This is referred to as ADS-B IN.  ADS-B, ADS-R and TIS-B messages are generally referred to as traffic messages.  FIS-B messages are referred to as weather messages.  FIS-B messages are only received by UAT devices and are not available for 1090ES.

When will the ADS-B ground infrastructure be fully operational?

The ADS-B ground infrastructure is fully deployed today.  Those who choose to equip early will realize benefits of ADS-B OUT/IN long before the mandate.

What equipment is required to be compliant with the ADS-B 2020 mandate?

The mandate for ADS-B requires that your aircraft is equipped with an FAA TSO certified ADS-B (OUT) transmitter and an ADS-B compliant TSO certified GPS receiver.  ADS-B IN is not required for the mandate.

Please describe your UAT products?

We currently have two models. The ADS600-B and ADS600-EXP. The ADS600-B is TSO certified and has an STC/AML for installation in certified aircraft; however it can be installed in any aircraft, whether certified, experimental, or light-sport. The ADS600-EXP is designed specifically for the experimental and light-sport aircraft and is priced far less than the ADS600-B.

Both the ADS600-B and the ADS600-EXP are fully compliant for the 2020 mandate.

Can I use my existing transponder with the ADS600-B?

Absolutely.   Whether you have a Mode C or Mode S transponder, we can interface to it!   Our TransMon™ device clips over your existing transponder coax cable sending the transponder’s data to the ADS600-B.   This satisfies the FAA’s requirement that the transponder in the airplane act as the control panel for an ADS-B OUT device.

What is the advantage of having an FAA certified ADS-B receiver (ADS-B IN)?

Today, pilots are aware of the FIS-B weather service, but FIS-B is more than just weather.   In the near future, the FAA will implement technology that expands today’s definition of ADS-B.   Programs such as digital flight clearances will be especially useful to the GA pilot.  Imagine not having to use the comm radio to file and receive your IFR flight plan.   You will transmit your flight plan, and the FAA will send back your clearance using the ADS-B transmitter and receiver, and both of these will have to be TSO certified devices to participate.    The transmitter and receiver also have to directly communicate with each other as well – something not physically possible with a portable receiver.

What is the advantage of having an FAA certified ADS-B transmitter (ADS-B OUT)?

First and foremost, the FAA is mandating that a certified (TSO) ADS-B OUT be installed in your aircraft by January 1, 2020.   The FAA will not allow portable ADS-B OUT devices to be certified;  the equipment must be hard-wired into the existing aircraft and interfaced with existing systems – and then functionally proven using the FAA STC process.

I want to wait until the last minute to install, as the price will surely fall - why don't you recommend this?

As I write this, five and a half years remain until the mandate.   It may seem like a long time, but there are many companies selling ADS-B products today, and the prices have come way down due to this robust competition.   If anything, we see prices rising as demand rises, when approximately 150,000 aircraft owners attempt to meet the mandate at the same time – as late as possible.   This will definitely drive prices up for installation costs, as the FAA estimates, as of a year ago, that there won’t be enough avionics shops to handle all of the work.

What is the advantage of installing UAT versus 1090ES equipment?

If you regularly fly above 18,000 feet, the FAA states you must equip with the 1090ES system.  But if not, then UAT is the way to go based on both cost and features.   In general, UAT equipment cost thousands less than a 1090ES system.   There will be less “boxes” to install as well, saving on the installation cost.   Mostly though, the ADS-B IN FIS-B service is only available through the UAT technology.



Approved Model List


Global Positioning System


Automatic Dependent Surveillance-Broadcast


Light Sport Aircraft


Automatic Dependent Surveillance-Rebroadcast


Supplemental Type Certificate


Aeronautical Radio Incorporated


Traffic Information Services-Broadcast


Flight Information Services-Broadcast


Technical Standard Order


Global Navigation Satellite System


Universal Access Transceiver