Summary of the methodology used:



CO 2 Emissions per passenger take into consideration the load factor and are based only on passenger operations (i.e. fuel burn associated with belly freight is not considered). The steps for the estimation of CO 2 emissions per passenger:



Step 1: Estimation of the aircraft fuel burn







Step 2: Calculation of the passengers' fuel burn based on a passenger/freight factor which is derived from RTK data





Step 3: Calculation of seats occupied (assumption: all aircraft are entirely configured with economic seats). Seat occupied = Total seats * Load Factor





Step 4: CO2 emissions per passenger = (Passengers' fuel burn * 3.16) / Seat occupied







Note: for flights above 3000 km, CO2 emissions per passenger in premium cabin = 2 x CO2 emissions per passenger in economy