Data verification report
Heathrow’s Webtrak and data systems are fed directly by the NATS radar that is used to direct aircraft to and from Heathrow.
The accuracy of the system has been verified by the CAA. Nevertheless in response to concerns about the data accuracy, an independent Dutch company, NLR, was appointed in 2015 under the auspices of the Heathrow Community Noise Forum to carry out the extensive verification study. This work was overseen by the Forum members and has taken place over the past year. NLR has now completed their study and it confirms that Heathrow’s data systems are accurate. The full report can be downloaded here: