Centralised national contingency facilities provide fallback services at a single site for many/all ATM operations. These national facilities may or may not be co-located with other ANSP centres.
Objective
Single contingency centres can be developed to cover several ATM units. This reduces the costs over what would be incurred if contingency facilities were duplicated for each centre within a country. Infrastructure resources can be focused around a single contingency facility that can then be reconfigured for each area control centre (ACC) operated by an ANSP.