The selection of random samples must by nature and extent be representative of the passenger volume, considering the type of operation, the frequency of flights on various routes, in/outbound flights, applicable season and seat capacity of the aeroplane.
Kaalutavate reisijate ja nende pagasi juhuslikul valimisel tuleb lähtuda lennu liigile, erinevate marsruutide lendude sagedusele, väljuvatele/sissetulevatele lendudele, hooajale ja lennuki istekohtade arvule iseloomulikust reisijate arvust.