TM 1-1510-218-10 7-54 RECOMMENDED CRUISE POWER 1800 RPM ISA – 20 °C NOTE: TO OBTAIN FUEL FLOW  PER  ENGINE,  DIVIDE  THE  TOTAL  FUEL  FLOW  VALUE  FOR  THE CORRESPONDING ALTITUDE BY TWO. AIRSPEED ~ KNOTS PRESSURE ALT IOAT OAT TORQUE PER ENGINE FUEL FLOW TOTAL @12,000 LB @11,000 LB @10,000 LB FEET ° C ° C % LB/HR IAS TAS IAS TAS IAS TAS SL 0 -5 100 972 244 237 245 238 246 238 2,000 -4 -9 100 946 242 241 243 242 244 243 4,000 -7 -13 100 920 240 246 241 246 241 247 6,000 -11 -17 100 898 237 250 238 251 239 252 8,000 -15 -21 100 880 235 255 236 256 237 257 10,000 -19 -25 100 862 233 260 234 261 235 262 12,000 -22 -29 100 846 231 265 232 266 233 267 14,000 -26 -33 100 836 228 270 229 272 230 273 16,000 -30 -37 100 828 226 276 227 277 228 578 18,000 -33 -41 97 798 220 278 222 279 223 281 20,000 -38 -45 90 740 212 276 213 278 215 279 22,000 -42 -48 84 692 203 273 205 276 207 278 24,000 -46 -52 78 642 195 270 197 273 199 276 26,000 – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 28,000 – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 29,000 – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 31,000 – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 33,000 – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 35,000 – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – Figure 7-50.  Recommended Cruise Power, 1800 RPM, ISA – 20 °C