TM 1-1510-225-10 7-81 MAXIMUM CRUISE POWER 1800 RPM ISA + 37 °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 58 52 2230 100 1002 234 250 236 251 236 252 237 253 2000 54 48 2230 100 974 232 255 233 256 234 257 235 258 4000 50 44 2208 99 940 228 258 230 260 231 261 232 262 6000 46 40 2141 96 894 223 261 225 262 226 264 227 265 8000 43 36 2052 92 846 218 262 219 264 221 265 222 267 10,000 39 32 1985 89 798 212 263 214 265 215 267 216 268 12,000 35 28 1873 84 746 205 263 207 265 209 267 210 269 14,000 31 24 1829 82 712 200 264 202 267 204 269 205 271 16,000 27 20 1762 79 682 195 266 197 269 199 272 201 274 18,000 23 16 1717 77 650 190 268 192 271 194 274 196 276 20,000 19 12 1673 75 628 185 2670 187 274 190 277 192 280 22,000 15 8 1628 73 602 179 271 182 275 185 279 187 282 24,000 11 4 1516 68 564 171 268 174 273 177 277 180 281 26,000 7 0 1405 63 522 161 262 166 269 169 274 172 279 28,000 3 -4 1293 58 480 148 250 156 262 160 269 164 275 29,000 0 -5 1249 56 460 139 239 149 256 155 266 159 273 31,000 -4 -9 1115 50 422 – – – – – – 134 239 144 257 150 267 33,000 -8 -13 1048 47 390 – – – – – –     – – –     – – – 130 241 140 258 35,000 -12 -17 959 43 360 – – – – – –     – – –     – – –     – – – – – – 125 242 Figure 7-77.  Maximum Cruise Power, 1800 RPM, ISA + 37 °C