of a pilot or member of the flight crew, in relation to maintenance and airworthiness of an aircraft, of air traffic control, of planning aircraft operations or of carrying out aviation meteorological observation and providing forecasts, must have a valid licence, rating, authorization, approval or certificate.
- pilota oziroma člana letalske posadke, - glede vzdrževanja in plovnosti zrakoplova, - vodenja in kontrole zračnega prometa, - načrtovanja letalskih operacij ali - izvajanja letalskih meteoroloških opazovanj in dajanja napovedi, mora imeti veljavno licenco, rating, pooblastilo, potrdilo oziroma spričevalo.