The structures in the United States that are located within the ALS area are required to be frangible according to FAA Advisory Circular AC150/5345-45C. There is great potential for damage to the aircraft, injury to passengers and problems for the first responders. An aircraft landing in an ALS field is in an environment which has both electrical equipment and structures. These systems, while critical for safe landing, also provide a potential issue in the case of an undershoot or overrun on a landing. In the United States, there are 2100 runway ends which are equipped with ALS.
For the 31 years from 1976-2007, commercial aviation demand – measured in terms of commercial passenger enplanements in the system – has tripled from 238 to 767 million 1.Īpproach lighting systems (ALS) provide a critical component of the runway safety systems to allow a pilot to transition from instrument to visual flight during landing.
Significant encroachment of airports around populated areas has occurred in the past five decades. These criteria do not address issues such as the safety of passengers and rescue personnel after an aircraft accident/incident.Īirports around the world face enormous challenges to protect people and property during regular aircraft operations. The current standards and criteria to implement approach lighting systems are based on the number of aircraft operations, the type of airport operations, and the design criteria of runway operations.
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