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Learn and practise your Pilot / PPL Radiotelephony with G-UDRT. We provide hours of original content developed by Helena Hughes, an experienced air traffic controller. With 38 learning sessions and 20 practise flights split over 7 modules, we have the content you need to fully master the subject.

For student pilots, the modules mirror the typical progression through the syllabus. We start by teaching the basics, through the first solo and onto qualifying cross country flights.

Licensed pilots wanting to enhance their RT can use the later modules to simulate long flights containing the full breadth of PPL radiotelephony covered.


Just beginning your RT learning journey? Start here. We provide eight learning and two short practise sessions to embed the principles of good PPL radiotelephony.

Introduction to G-UDRT

Understand the features and benefits provided by the app

Do and do nots

Appreciate the principles required for high quality pilot radiotelephony

Letters and numbers

Learn and practise the pronunciation of letters and numbers in aviation

Introduction to call signs

Understand the call signs used in RT and how they are abbreviated

Mandatory Readbacks

Know what calls must be read back and why

Pronunciation of time

Understand the use of UTC in RT and how time is pronounced

Shorthand PLOG entries

Learn how professionals use shorthand to quickly record the RT they hear

Types of call received

The differences between clearances, instructions and information

Standard phraseology

Four sessions that allow you to learn and then practise the basic phraseology required by the VFR pilot.

Why phraseology matters

Examples of how correct phraseology improves efficiency and safety

Common phraseology

An introduction to some common RT phrases and how to use them

Less common phraseology

Gain an appreciation of some less common, but important phrases

Aerodrome Radiotelephony

Twelve learning and practise sessions that enable you to master the PPL radiotelephony required to operate on the ground at ATC, FIS, A/G and unattended aerodromes.

General aerodrome RT

An introduction to the RT required to operate on the ground at an aerodrome

Types of aerodrome

The differences between ATC, FIS, A/G and unattended aerodromes

ATC aerodrome RT

Master the RT required to operate at various ATC aerodromes

FIS aerodrome RT

Learn and practise the specific RT required at FIS aerodromes

A/G aerodrome RT

Master the RT used at aerodromes offering an air/ground radio service

Unattended aerodrome RT

Learn and practise the RT used at both types of unattended aerodrome

Complex taxi instructions

Understand the complex taxi instructions you may receive at ATC aerodromes

Dealing with the unexpected

Two learning sessions and one practise flight which allow you to master the RT required for when things don’t go as planned. This includes emergency and urgency situations, procedures to follow if your radio fails and the RT required when lost.

Emergency & urgency calls

Understand how to summon help with Mayday and Pan Pan calls

Request help for others

Know how to seek help for other people who are in danger

Uncertain of position

Learn correct use of the radio for if you ever become lost in flight

Radio failure

Understand the procedures to follow if your radio fails

Special squawk codes

Appreciate the different squawk codes to be used in specific circumstances

Lost on an aerodrome

Understand the correct phraseology to use if lost whilst taxiing


Five learning and four practise sessions that teach the RT required to fly circuits at ATC, FIS, A/G and unattended aerodromes.

The basics of a circuit

Understand the basics of a flying a circuit

Book out

Understand how to book out, and the details you should pass

General circuit RT

An in-depth introduction to common circuit RT

Missed approaches

Learn the RT associated with go-arounds and similar occurrences

Delaying actions

Learn the RT associated with orbits, extending downwind, etc

Circuit traffic reports

An introduction to traffic reports in the circuit

ATC aerodrome circuit RT

Learn and practise the RT required to fly circuits at ATC aerodromes

FIS aerodrome circuit RT

Master the RT required in the circuit at FIS aerodromes

A/G aerodrome circuit RT

Practise the RT to operate in the circuit with an air/ground radio service

Unattended circuit RT

Understand the circuit RT at an unattended aerodrome

Circuit emergencies

A recap of the emergency and urgency RT applicable to the circuit

Departure and arrival RT

With 5 learning sessions and a further 5 practise sessions, we take an in-depth look at the PPL radiotelephony required to depart from and return to an aerodrome. This includes ATC aerodromes with and without controlled airspace, as well as FIS, A/G and unattended aerodromes.

Departure calls

Learn the calls to make as you depart from an aerodrome

Arrival calls

Learn how to request a join and how to respond to “Pass your message”

Joining a circuit

A look at the RT required to join a circuit, including overhead joins

Changing frequency

Learn the RT used when changing frequency to another ground station

Controlled airspace

Review how departure and arrival RT varies in controlled airspace

ATC departure and arrival

Learn and practise for departures and arrivals at ATC aerodromes

FIS departure and arrival

Master departures and arrivals at FIS aerodromes

A/G departure and arrival

Learn and practise for departures and arrivals at A/G aerodromes

Unattended aerodromes

Master departures and arrivals at unattended aerodromes

Cross country RT – UK FIS

The cross country module is broken down into nine learning sessions. These teach you all you need to know about the PPL radiotelephony applicable to cross country flying. It includes detailed sessions on flight outside controlled airspace (OCAS) and also transiting the different airspace structures commonly found in the UK. A single, large practise session simulates several realistic flights crossing that airspace.

Introduction to UK FIS

The UK Flight Information Services for when outside controlled airspace

Introduction to LARS

The Lower Airspace Radar Service and what it provides to a pilot

Services available “OCAS”

A detailed look at the services available outside controlled airspace

Choosing a service

Advice on which service a pilot may wish to choose

Agreements OCAS

Introduction to agreements with a controller OCAS

Traffic information OCAS

The traffic information provided outside of controlled airspace

Acquiring a service

A detailed look at the RT required to obtain a service OCAS

Leaving a FIS service

A review of the RT used when leaving a service

Cross country RT – Transiting controlled airspace

Controlled airspace

An introduction to CAS, and the implications of an infringement

Requesting a transit

Learn how to request a transit and understand the response

Delayed or denied transits

Witness examples of a delayed transit and the options open to the pilot

Request a routing

Learn how a pilot can request a specific routing through CAS

Request change to routing

Understand how a pilot in transit can request a change to the routing

Clearance limits

Understand clearance limits and how to adhere to them

A transfer to the tower

Learn how with ATC, you may be transferred to the tower for part of a transit

SVFR transits

Learn the visibility rules and the RT associated with poor visibility

Operating on the edge

Understand the RT for a transit that dips in and out of CAS

Cross country RT – Additional considerations

En-route ATZs

Understand regulations and appropriate RT regarding en-route ATZs

Vertical infringments

Advice relating to the avoidance of vertical infringements


Operating through, over or near to military air traffic zones

Danger areas

Understand the RT in relation to danger areas, including DACS & DAAIS


Transponder mandatory zones and the RT relating to them

Frequency monitoring

Understand the use of “listening squawks” and associated RT

Position reporting

A look at common and more formal position reporting

Use of VDF

Learn the RT required to receive a bearing using VHF Direction Finding

Flight plans

A look at flight plans and how to activate them via the radio

Weather information

Understand how to receive weather information

Customise content with our transcript editor

Customise content with our transcript editor

Want to change an aerodrome name, frequency, visual reporting point reference or amend a transmission so that it mirrors a local procedure? Well G-UDRT allows you to do just that. In fact you can edit almost anything within a practise session.

With our find and replace functionality, you can quickly change all occurrences of a word or phrase. Else use the fully featured call editor to update any or all of the elements in a flight.

There is no need to do this, but the capability is there if you need it.

Looking for help or FAQs?

Try out our video tutorials on how to instal the best voices your device supports and how to get the most out of your time with G-UDRT.

Help & FAQs

All our content is based on pilot radiotelephony in CAA documents such as CAP413, CAP797, the Skyway Code and many more. It also reflects the 30 years experience our author has as a senior Air Traffic Controller, pilot and instructor.