Vertical separation of VFR and IFR flights[8] Magnetic route figure of merit (FOM) 0° to 179° 180° to 359° VFR IFR VFR IFR FL feet FL feet FL feet FL feet N/A N/A 010 1,000 N/A N/A 020 2,000 N/A N/A 030 3,000 N/A N/A 040 4,000 035 3,500 050 5,000 045 4,500 060 6,000 055 5,500 070 7,000 065 6,500 080 8,000 075 7,500 090 9,000 085 8,500 100 10,000 095 9,500 110 11,000 105 10,500 120 12,000 115 11,500 130 13,000 125 12,500 140 14,000 135 13,500 150 15,000 145 14,500 160 16,000 155 15,500 170 17,000 165 16,500 180 18,000 175 17,500 190 19,000 185 18,500 200 20,000 195 19,500 210 21,000 N/A N/A 220 22,000 N/A N/A 230 23,000 N/A N/A 240 24,000 N/A N/A 250 25,000 N/A N/A 260 26,000 N/A N/A 270 27,000 N/A N/A 280 28,000 N/A N/A 290 29,000 N/A N/A 310 31,000 N/A N/A 330 33,000 N/A N/A 350 35,000 N/A N/A 370 37,000 N/A N/A 390 39,000 N/A N/A 410 41,000 N/A N/A 430 43,000 N/A N/A 450 45,000 N/A N/A 470 47,000 N/A N/A 490 49,000 N/A N/A 510 51,000