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UK Civil Aviation Regulations

These are published by the CAA on our UK Regulations pages. EU Regulations and EASA Access Guides published by EASA no longer apply in the UK. Our website and publications are being reviewed to update all references. Any references to EU law and EASA Access guides should be disregarded and where applicable the equivalent UK versions referred to instead.

This report describes a study that was undertaken to assess the accuracy of the flight path information provided by ANOMS 8 – the Noise and Track Keeping (NTK) system installed at the London airports. Aircraft positional data recorded using Mode S/ADS-B receiving equipment were used for independent comparison against ANOMS 8 outputs, which are based on Mode C Secondary Surveillance Radar. For the sample of flights analysed, the results indicate that the accuracy of ANOMS 8 NTK data is, on average, no worse than ±55 ft in aircraft height and no worse than 30 m in position. These are within the expected tolerances of the radar data. The study has shown no clear evidence of a consistent bias in the NTK height or position data at any of the airports.
Status:
Current
Review comment:
-
Version:
1
Version date:
30-Sep-2009
View file:

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