Breaking rules: estimates show that more than 1,000 commercial airports have yet to comply with ICAO's frangibility rules, set out in its Annex 14 and Aerodrome Manual Part 6 publications. Exel's Jaakko Martikainen explains what these regulations demand.(Airfield Lighting)

Airports International, January, 2008 by Martikainen, Jaakko

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The Frangibility Design Criteria document regarding approach lights and their support structures was first published by ICAO in Annex 14, Volume 1, second edition, 1995. The ways in which this design criteria was to be understood and, most importantly, implemented at airports around the world remained open to interpretation for most aviation professionals, as the document that was to define frangibility, Aerodrome Design Manual Part 6--Frangibility (ADM6), was then "in preparation".

Its publication in March 2006 removed the questions regarding approach lights and their support structures and, at the same time, widened the scope of installations where frangibility is now deemed vital to include several new areas.

Due to...

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