The ever-popular listening squawks help general aviation pilots stay safely clear of controlled airspace.

A listening squawk dialled into an aircraft's transponder allows an air traffic controller to alert a pilot if the aircraft looks likely to infringe. As long as the pilot is listening out the correct radio frequency. Once clear of the area the pilot can reset the transponder code.

Analysis of pilot reports shows that the correct use of a listening squawk (also known as a frequency monitoring code) could have prevented 65% of infringements.

The UK Civil Aviation Authority has published a new version the squawk card for the general aviation flying season. The card sets out the codes and frequencies for reference to help effective pre-flight planning. 

The ASI website provides resources to support general aviation pilots. Content covers infringement avoidance, incident reports, facts and statistics and local area information.