International Air Transport Association
以下でアクセス： 12 3月, 2019
4Data on how the air passenger industry has performed in terms of traffic and utilization.
RPK - Revenue Passenger Kilometers, also called Passenger kilometres perfromed (PKP). One revenue passenger-kilometre means that one passenger is carried on one kilometre;
ASK - Available Seat Kilometers. One available seat-kilometre means that one seat is flown on one kilometre;
PLF - Passenger Load Factor. It means revenue passenger-kilometres expressed as a percentage of the available seat-kilometres;
% YoY - % change Year on Year (month of current year vs the same month of the previous year);
% YTD YoY - % change Year on Year (year to date of current year vs the same year to date of the previous year);
% MoM - % change Month on Month (current month vs previous month);
Percentage point difference MoM - percentage point difference between load factors of two months;
Percentage point difference YoY - percentage point difference between load factors of two years.
Note: the seven domestic passenger markets for which broken down data are available account for 30% of global total RPKs and approximately 82% of total domestic RPKs. The total industry and regional growth rates are based on a constant sample of airlines combining reported data and estimates for missing observations. Airline traffic is allocated according to the region in which the carrier is registered; it should not be considered as regional traffic.