TM 1-1510-225-10 7-78 MAXIMUM CRUISE POWER 1800 RPM ISA + 10 °C NOTES: IOAT, TORQUE, AND FUEL FLOW BASED ON 12,000 POUNDS. 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 TOTAL FUEL FLOW 13,000 LB 12,000 LB 11,000 LB 10,000 LB FEET ° C ° C FT-LB % LB/HR IAS TAS IAS TAS IAS TAS IAS TAS SL 31 25 2230 100 990 238 244 239 245 240 246 241 246 2000 27 21 2230 100 962 236 248 237 249 238 250 239 251 4000 23 17 2230 100 936 234 253 235 254 236 255 237 256 6000 19 13 2230 100 910 231 258 232 259 233 260 234 261 8000 16 9 2230 100 886 229 263 230 264 231 265 232 266 10,000 12 5 2230 100 862 226 268 228 269 229 270 230 272 12,000 8 1 2230 100 840 224 273 225 275 226 276 227 277 14,000 5 -3 2230 100 824 221 278 223 280 224 282 225 283 16,000 1 -7 2141 96 782 215 279 216 281 218 283 219 284 18,000 -3 -11 2029 91 742 208 279 210 282 212 284 213 286 20,000 -7 -15 1962 88 708 202 280 204 283 206 285 207 287 22,000 -11 -19 1851 83 672 195 279 197 282 199 285 201 288 24,000 -15 -23 1717 77 628 187 277 189 281 192 284 194 287 26,000 -19 -27 1606 72 582 177 273 181 277 183 281 186 285 28,000 -24 -31 1494 67 536 167 267 171 273 175 278 177 282 29,000 -26 -32 1427 64 516 161 262 166 270 170 275 173 280 31,000 -30 -36 1293 58 474 148 250 156 262 161 270 164 276 33,000 -35 -40 1182 53 436 – – – – – – 143 250 150 263 155 271 35,000 -39 -44 1093 49 402 – – – – – –     – – –     – – – 137 249 145 263 Figure 7-74.  Maximum Cruise Power, 1800 RPM, ISA + 10 °C