FRTOLFRTOL

Legal

Terms, policies, company information and credits for the FRTOL app and website.

Important Notice

Training Aid Only

FRTOL is a training aid for practising radiotelephony, provided "as is". It isn't approved, endorsed or certified by the UK Civil Aviation Authority or any other authority, and it isn't affiliated with them. It doesn't replace your instructor, the RT exams or official publications, and must never be used for real-world flight planning, navigation or air traffic communication.

Company Information

FRTOL is provided by Xynnar Group Ltd, a private limited company registered in England and Wales, company number 16167212. Contact us through the support link on FRTOL's App Store page.

Credits and Licences

FRTOL uses these data sources and open-source components, under their licences.

Airspace and AerodromesData © openAIP, licensed under CC BY-NC 4.0.
WeatherMETAR reports from the Aviation Weather Center (NOAA/National Weather Service). Use of this data doesn't imply endorsement by NOAA or the NWS.
Live TrafficAircraft positions © adsb.lol contributors, available under the Open Database License (ODbL) 1.0.
Speech RecognitionWhisperKit and the Core ML speech model © Argmax, Inc.; the Whisper model © OpenAI. Both are under the MIT Licence.
Voices and AIController voices are computer-generated with Microsoft Azure AI Speech. The AI controller and debriefs are generated by Anthropic's Claude. You're never talking to a real air traffic controller.
PhraseologyBased on CAP 413, the UK Radiotelephony Manual, published by the UK Civil Aviation Authority. FRTOL isn't approved by or affiliated with the CAA.
FontsBarlow Condensed, IBM Plex Sans and JetBrains Mono, under the SIL Open Font License.

Trademarks

FRTOL and the FRTOL logo are trademarks of Xynnar Group Ltd. SkyDemon, ForeFlight, Garmin Pilot, SkyEcho, X-Plane, Microsoft Flight Simulator, Apple, iPhone, App Store and YouTube are trademarks of their respective owners. They're named only to describe compatibility or availability, and FRTOL isn't affiliated with, or endorsed by, any of them.