TM 1-1510-218-10 7-55 RECOMMENDED CRUISE POWER 1800 RPM ISA – 10 °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 10 5 100 978 243 239 244 240 244 241 2,000 7 1 100 950 240 244 241 245 242 246 4,000 3 -3 100 926 238 248 239 249 240 250 6,000 -1 -7 100 902 236 253 237 254 238 255 8,000 -5 -11 100 880 233 258 234 259 235 260 10,000 -8 -15 100 862 231 263 232 264 233 265 12,000 -12 -19 100 850 229 268 230 270 231 271 14,000 -16 -23 100 840 226 274 227 275 228 276 16,000 -19 -27 99 826 223 278 224 280 226 281 18,000 -24 -31 93 770 215 276 216 278 218 280 20,000 -28 -35 86 714 206 274 208 276 209 278 22,000 -32 -38 80 666 198 272 200 275 202 277 24,000 -36 -42 74 620 189 269 191 272 193 275 26,000 -40 -46 68 574 180 265 182 268 185 272 28,000 -44 -50 63 532 170 259 174 265 177 267 29,000 -46 -52 60 512 165 256 169 262 172 267 31,000 -50 -56 55 474 153 247 159 256 163 262 33,000 – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 35,000 – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – Figure 7-51.  Recommended Cruise Power, 1800 RPM, ISA – 10 °C