Cyrrus recently undertook an Instrument Landing System (ILS) technical safeguarding assessment at Changi Airport in Singapore. The Cyrrus Safeguarding team investigated the effects of a proposed building development near the Airport that was inside the protected technical safeguarded volume of the ILS Localiser and associated Distance Measuring Equipment.  Using specialist software modelling, Cyrrus staff were able to predict the potential impact of the development and provide the client with a detailed report on the outcome.