Frangibility Legislation Compliance
Pollite ensures you comply fully with ICAO's very latest 2006 Frangibility requirements (Doc 9157 AN/901 Aerodrome Design Manual pt 6 Frangibility First Edition 2006).
According to ICAO requirements any approach lighting structure required to be frangible should be designed to withstand the static and operational/survival wind loads with a suitable factor of safety but should break, distort or yield readily when subjected to the sudden collision forces of a 3000kg aircraft airborne and travelling in any direction at 140km/h.
At the point of collision
- The support structure should not impose a force on the aircraft in the excess of 45kN.
- The energy imported to the aircraft should not exceed 55kJ over the contact period.
- The impacted structure should give way tot he passage of the aircraft in a manner such that the latter may still achieve a successful landing, take-off or missed approach.
Pollite have successfully undertaken a series of full scale impact tests at speeds of 140km/h using a high speed vehicle mounted with impactor. Impact data has been recorded independently using load cells, high speed cameras and speed monitors and on all occasions tests have been witnessed by ICAO AND FAA recognised aviation testing houses.
