{"id":2159,"date":"2026-05-19T09:43:07","date_gmt":"2026-05-19T07:43:07","guid":{"rendered":"https:\/\/kidairport.com\/?page_id=2159"},"modified":"2026-05-19T11:56:10","modified_gmt":"2026-05-19T09:56:10","slug":"high-objects","status":"publish","type":"page","link":"https:\/\/kidairport.com\/en\/high-objects\/","title":{"rendered":"High Objects"},"content":{"rendered":"

Tall objects: A flight safety risk for aircraft<\/strong><\/h1>\n

Aircraft, such as aircraft and helicopters, take off and land at low altitude<\/strong> and follow established flight procedures. Unmarked tall objects, such as cranes, masts, tall buildings and wind turbines, are classified as flight obstacles and may pose a direct danger to aircraft if their location is not checked and analysed before the object is erected.<\/p>\n

Even temporary objects such as construction cranes<\/u><\/strong> are classified as flight obstacles and pose just as much flight safety risk as permanent buildings if their location is not controlled and, if necessary, also analysed before they are erected.<\/p>\n

Before tall objects are built:<\/strong><\/h2>\n
    \n
  1. Referral<\/strong><\/li>\n<\/ol>\n

    Contacting airports and LFV at an early stage <\/a>\u00a0reduces the risk of futile planning, delays or rejections<\/u>. Before a building permit has been granted or temporary sites have been placed, a referral regarding the site must be sent to nearby airports (80 km radius).<\/p>\n

    This is done to check if the object in the intended location affects the aircraft’s take-off and landing, obstacle limiting surfaces, flight procedures and technical equipment (CNS equipment).<\/p>\n

      \n
    1. Flight obstacle analysis (location assessment)<\/strong><\/li>\n<\/ol>\n

      If the object you are planning will be over 20 metres high, or if the construction crane will temporarily be over 20 metres high, a flight obstacle analysis must be carried out. This analysis can be done, for example, by LFV. A flight obstacle analysis investigates whether the object is suitable to place in the specified location without jeopardizing flight safety or flight operations in and around airports. The analyses are a tool that airports can use for their assessment in decisions and possible action planning.<\/p>\n

      Tall objects far from airports can also affect air traffic, which should always be taken into account. Objects under 20 m can also affect flight safety. That being said, it is always best to contact nearby airports when planning work that involves high obstacles that could permanently or temporarily affect aviation.<\/p>\n

      Keep in mind that<\/strong><\/p>\n