Flight path accuracy of the Gatwick Noise and Track Keeping System

This report describes a study that was undertaken to assess the accuracy of the flight path information provided by the new Noise and Track Keeping (NTK) system ANOMS, installed at Gatwick Airport in April 2019. The analysis confirms that the system continues to provide reliable flight data for the types of studies carried out by the Environmental Research and Consultancy Department (ERCD) of the CAA.