UK Airprox Board UK Airprox Board
  • The links on this page provide some interesting topical articles for more background reading. Although some are a bit dated, they still provide thought-provoking ideas and comments that are as applicable today as they were when they were produced.

    BGA Sailplane & Gliding Airprox article. The latest BGA Sailplane & Gliding Airprox article can be downloaded here. Our thanks to the BGA for permission to use it.

    LAA article. An interesting LAA article on electronic conspicuity can be downloaded here. Our thanks also to the LAA for their permission to use it.

    'Andrews' MIT paper on unalerted air-to-air visual acquisition. Many articles on lookout cite the ‘Andrews’ MIT paper on unalerted air-to-air visual acquisition when talking about reaction times. Although a bit dated now, it’s got some really interesting material within and can be downloaded here.

    Limitations of the see-and-avoid principle. Another good paper on the ‘Limitations of the see-and-avoid Principle’ from the Australian Transport Safety Bureau can be downloaded here.

    2016 FAA Advisory Circular AC 90-48D. Although aimed at US flyers, the 2016 FAA Advisory Circular AC 90-48D can be downloaded here and also has some good tips on how to avoid Airprox (which they term NMAC, meaning near midair collisions).

    Overflight of gliding sites. A one-page brief from the BGA on the topic of avoiding over-flight of gliding sites can be downloaded here. This has been of concern to the UKAB and the BGA for a long time and has been the subject of numerous articles to raise awareness.  Please avoid overflying glider sites below the maximum winch-launch altitude, the consequences of a wire or glider strike are obvious.

    2017 Airprox Barrier Performance. The safety barrier article from the 2018 Airprox magazine can be separately downloaded here and provides some thoughts as to the overall effectiveness of the Airprox safety barriers for 2017's incidents.