| developedby = Michael Filhol
| initialrelease = February 1, 2015
| latestrelease = 1.6.
1 ( April 22, 2019)
| writtenin = Python3
| os = Any
'''ATC-pie''' is an [[air traffic control]] simulation program featuring solo sessions, multi-player network connections
(through [[FGMS]] ) and tutorial sessions for teacher supervision of an ATC student . It can simulate en-route centre control (CTR) as well as airport-based services (TWR, APP, GND...), and allows 3D tower viewing through [[FlightGear]].
It is essentially designed for realism and simulates many tasks and situations of real-life ATC such as:
* strip rack and sequence management;
* radar monitoring and transponder identification;
* handovers to/from neighbouring controllers;
* routing and conflict anticipation;
voice instruction recognition and pilot speech synthesis in solo sessions.
The program is free and open source, and programmed in Python3 for Qt5 hence system-independant. Only Python3 and its Qt5 bindings must be installed. That done, it is meant to work straight away, with no make/compile command to run or external resource to install. The whole world is immediately available on radar. Tower viewing requires the appropriate FlightGear aircraft and scenery.
== Detailed feature list ==
Available session types:
* FlightGear multi-player network connections
For all session types:
airport mode (for ATC positions such as TWR, GND, APP, DEP at a selected airfiled)* en-route centre (free positioning of radar, no base airport or runway-related options)
Common data sources:
* Airport and navigation data retrieved from [http://data.x-plane.com X-Plane] sources (whole world default file set included)