217.4—Data collected (service classes).

(a) The statistical classifications are designed to reflect the operating elements attributable to each distinctive class of service offered for scheduled, nonscheduled and charter service.
(b) The service classes that foreign air carriers shall report on Schedule -T-100(f) are:
(1) FScheduled Passenger/Cargo
(2) GScheduled All-Cargo
(3) LNonscheduled Civilian Passenger/Cargo Charter
(4) PNonscheduled Civilian All-Cargo Charter
(5) QNonscheduled Services (Other than Charter). This service class is reserved for special nonscheduled cargo flights provided by a few foreign air carriers under special authority granted by the Department.