“Conversion process” means a type of technology used to convert a feedstock into aviation fuel; 

“CORSIA” means the Carbon Offsetting and Reduction Scheme for International Aviation( a ); 

“CORSIA eligible fuel” means a CORSIA sustainable aviation fuel or a CORSIA lower carbon aviation fuel, which an aeroplane operator may use to reduce its offsetting requirements( b ); 

“CORSIA lower carbon aviation fuel” means a fossil-based aviation fuel that meets the CORSIA Sustainability Criteria( c ) under this Order; 

“CORSIA sustainable aviation fuel” means a renewable or waste-derived aviation fuel that meets the CORSIA Sustainability Criteria( d ) under this Order; 

“domestic flight” means the operation of an aircraft from take-off at an aerodrome in the United Kingdom or its territories, to landing at an aerodrome of the United Kingdom or its territories; 

“Emissions Monitoring Plan” means the plan setting out how the aeroplane operator’s aviation emissions are to be monitored for the purposes of this Order; 

“Emissions Report” means the report produced by the aeroplane operator for the purposes of article 31(1); 

“Feedstock” means a type of unprocessed raw material used for the production of aviation fuel; 

“Flight plan” means specified information provided to air traffic services units, relative to an intended flight or portion of a flight of an aircraft; 

“Fuel uplift” means the measurement of fuel provided by the fuel supplier, as documented in the fuel delivery notes or invoices for each flight, in litres; 

“Great Circle Distance” means the shortest distance, rounded to the nearest kilometre, between the origin and the destination aerodromes, measured over the earth’s surface modelled according to the World Geodetic System 1984 (WGS84)( e ); 

“GHG” means Greenhouse gases; 

“IAF” means International Accreditation Forum; 

“ICAO” means the International Civil Aviation Organisation( f ); 

“IEC” means International Electrotechnical Commission; 

“international flight” means the operation of an aircraft from take-off at an aerodrome of a State or its territories, to landing at an aerodrome of another State or its territories; 

“ISO” means International Organization for Standardization; 

