PPRuNe Forums - View Single Post - NAS - The Political Farce Continued (Thread 5)
Old 23rd Nov 2003, 13:40
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Jet_A_Knight

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Another gem on the cd is that 'during this critical phase' (descent) do not let cockpit workload stop you looking out' or words to that effect.

Yep, I'll just let the motors cook, the checks can look after themselves etc etc

This principle of See-And-Avoid was the subject of a 1991 Bureau Of Air Safety Research Report named "Limitations Of The See And Avoid Principle' and this report concluded (in part):

· The see-and-avoid principle in the absence of traffic alerts is subject to serious limitations. It is likely that the historically small number of mid-air collisions has been in a large part due to low traffic density and chance as much as the successful operation of see and avoid.

· Unalerted see-and-avoid has a limited place as a last resort means of traffic separation at low closing speeds but is not sufficiently reliable to warrant a greater role in the air traffic system. BASI considers that see-and-avoid is completely unsuitable as a primary traffic separation method for scheduled services.

· Many of the limitations of see-and-avoid are associated with the physical limits of human perception, however there is some scope to improve the effectiveness of see-and-avoid in other areas

· The most effective response to the many flaws of see-and-avoid is to minimise the reliance on see-and-avoid in Australian airspace.

Did anyone in the ARG read this, or read it and ignore it?
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