3.3 REFERENCE CASES – TWELVE COMBINATIONS The full list of 12 reference cases is given in Table 3-1 below. Each case has a unique case ID based on the aircraft and route codes given in the preceding sections. These are given in the ‘Case ID’ column. Table 3-1: Reference case combinations 3.4 Aircraft Operation Route Case ID Jet fuselage-mounted engines Arrival Curved JETFAC Jet fuselage-mounted engines Arrival Straight JETFAS Jet fuselage-mounted engines Departure Curved JETFDC Jet fuselage-mounted engines Departure Straight JETFDS Jet wing-mounted engines Arrival Curved JETWAC Jet wing-mounted engines Arrival Straight JETWAS Jet wing-mounted engines Departure Curved JETWDC Jet wing-mounted engines Departure Straight JETWDS Propeller engines Arrival Curved PROPAC Propeller engines Arrival Straight PROPAS Propeller engines Departure Curved PROPDC Propeller engines Departure Straight PROPDS RECEPTORS Reference results are provided for each of the cases presented in Section 3.3. A series of 18 receptors is defined in terms of x and y coordinates on a flat-earth grid at which the reference results are given. These receptors are identified by a unique receptor ID, from R01 to R18. They are presented in Appendix A, Table A-12 and illustrated in blue in Figure 3-2.