Surveillance systems shall be designed, built, maintained and operated using appropriate and validated procedures in such a way as to provide the required performance applicable in a given environment (surface, TMA, en-route) with known traffic characteristics and exploited under an agreed and validated operational concept, in particular in terms of accuracy, coverage, range and quality of service.
Nadzorni sistemi se načrtujejo, gradijo, vzdržujejo in upravljajo po ustreznih in veljavnih postopkih tako, da se dosežejo zahtevani rezultati za dano okolje (manevrska površina letališča, terminalno območje, na zračni poti) z znanimi prometnimi značilnostmi in obvladovano v skladu z dogovorjenim in veljavnim operativnim konceptom, zlasti glede točnosti, pokrivanja, razpona in kakovosti storitev.