“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;  “IEC” means International Electrotechnical Commission;  “ICAO” means the International Civil Aviation Organisation( f );  “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;  ( a )  Volume IV (Carbon Offsetting and Reduction Scheme for International Aviation (CORSIA)) of Annex 16 (Environmental  Protection) to the Convention on International Civil Aviation (June 2018).  ( b ) CORSIA eligible fuel is a fuel which complies with the CORSIA Sustainability Criteria defined within the ICAO document  entitled “CORSIA Sustainability Criteria for Sustainable Aviation Fuels” which is available from the ICAO website at  www.icao.int. For a hard copy contact the ICAO E-Commerce and Publications Sales Unit at International Civil Aviation  Organisation (ICAO), 999 Robert-Bourassa Boulevard, Montreal, Quebec H3C 5H7, Canada (telephone +1 514-954-8219  and e-mail sales@icao.int).  ( c )  “CORSIA Sustainability Criteria for Sustainable Aviation Fuels” is available from the ICAO website at www.icao.int. For a  hard copy contact the ICAO E-Commerce and Publications Sales Unit at International Civil Aviation Organisation (ICAO),  999 Robert-Bourassa Boulevard, Montreal, Quebec H3C 5H7, Canada (telephone +1 514-954-8219 and e-mail  sales@icao.int).  ( d ) “CORSIA Sustainability Criteria for Sustainable Aviation Fuels” is available from the ICAO website at www.icao.int. For a  hard copy contact the ICAO E-Commerce and Publications Sales Unit at International Civil Aviation Organisation (ICAO),  999 Robert-Bourassa Boulevard, Montreal, Quebec H3C 5H7, Canada (telephone +1 514-954-8219 and e-mail  sales@icao.int).  ( e )  Latitude and longitude coordinates of aerodromes can be obtained from the ICAO Location Indicators database which is  available from the ICAO website at www.icao.int. For a hard copy contact the ICAO E-Commerce and Publications Sales  Unit at International Civil Aviation Organisation (ICAO), 999 Robert-Bourassa Boulevard, Montreal, Quebec H3C 5H7,  Canada (telephone +1 514-954-8219 and e-mail sales@icao.int).  ( f )  ICAO was set up under Part II of the Convention on International Civil Aviation, signed at Chicago on 7th December 1944.  6