an air carrier requesting slots for a non-stop service between two Community airport where at most two other air carriers operate a direct service between these airports or airports systems on that day and holding or having been allocated fewer than four slots at that airport on that day for that non-stop service, transporteur aérien ne disposant pas de plus de 3 créneaux par jour dans un aéroport coordonné et demandant que lui soient attribués d'autres créneaux pour assurer des services le jour en question