The problem of types of roofing materials on Navaids signals

Statement of the Problem

Physical threats to safety and security of aircrafts, life and property are the foremost reasons why buildings around aerodromes must be restricted. However, according to Cortesi et al. (2002), the underlying reason is technical rather than physical. The buildings are capable of influencing, altering or distorting navaids signals between the aircraft and ground equipment and therefore risking loss of intelligence in the transmissions. Such interference could have devastating effects on flight navigation especially during landing. These structures around airports have been restricted partly because they pose a technical threat to flight navigation. This restriction as captured in Kenya civil aviation act number 21 of 2013 has not been fully tested. This law is not supported by sufficient data concerning the influence of roofing materials on radio navigation signal. To fill this gap, this study focused on establishing the effect of selected roofing materials on air navigation signal propagation.