General Aviation

Published on April 9th, 2015 | by Mark Dwyer


Dublin Flight Information Listening Squawk

Dublin Flight Information


Squawk 0401

*** Being Introduced from 20th May 2015 ***

FIS Frequency 118.500 MHz

The Listening Squawk, officially known as a Frequency Monitoring Code, will play a vital role in reducing infringements of controlled airspace by enabling air traffic controllers to alert pilots if their aircraft looks likely to infringe. Any aircraft fitted with a Mode A/C or Mode S transponder can use these codes.

By entering the 0401 squawk code into the transponder and listening to the published radio frequency, a pilot signifies to Dublin Air Traffic Control that he/she is actively monitoring radio transmissions on the Flight Information Frequency (FIS) 118.5 and that their aircraft position is visible on radar. A call to FIS can still be made to request a flight information service but it is expected that the number of calls to the frequency will reduce.

Airspace Incursion Warning for controllers will continue to be available but the Listening Squawk will add a further safety net to help ensure aircraft do not infringe controlled airspace.

The selection of the 0401 squawk by pilots does not imply the provision of an ATC service.

Tags: , , , ,

About the Author

Mark is an airline pilot flying the Boeing 737 for a major European airline. In addition he is also a Type Rating Instructor, Type Rating Examiner and Base Training Captain on the B737. Outside of commercial flying Mark enjoys flying light aircraft from the smallest 3 Axis microlights up to heavier singles. He is also an instructor and EASA Examiner on single engines and a UK CAA Examiner. He flies the Chipmunk for the Irish Historic Flight Foundation (IHFF). Mark became the Chairman of the National Microlight Association of Ireland (NMAI) in 2013 and has overseen a massive growth in the organisation. In this role he has worked at local and national levels. In 2015, Mark won ‘Upcoming Aviation Professional Award’ at the Aviation Industry Awards sponsored by the IAA. Mark launched this website back in 2002 while always managing the website, he has also been Editor and Deputy Editor of FlyingInIreland Magazine from 2005 to 2015.

Comments are closed.

Back to Top ↑