TM 1-1510-225-10 7-80 MAXIMUM CRUISE POWER 1800 RPM ISA + 30 °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 51 45 2230 100 1000 235 248 236 250 237 251 238 251 2000 47 41 2230 100 972 233 253 234 254 235 255 236 256 4000 43 37 2230 100 944 231 258 232 259 233 261 234 262 6000 40 33 2230 100 918 228 263 229 264 230 266 231 267 8000 36 29 2185 98 878 224 266 225 267 226 269 227 270 10,000 32 25 2096 94 830 218 267 219 269 221 270 222 272 12,000 28 21 1985 89 774 211 267 212 269 214 270 215 272 14,000 24 17 1918 86 740 205 268 207 271 209 273 210 275 16,000 20 13 1873 84 706 200 270 202 273 204 275 205 277 18,000 16 9 1806 81 674 195 272 197 275 199 277 201 279 20,000 13 5 1739 78 650 190 274 182 277 194 280 196 283 22,000 9 1 1695 76 622 184 274 187 278 189 281 191 284 24,000 5 -3 1583 71 580 175 271 179 276 181 280 184 283 26,000 0 -7 1472 66 538 166 266 170 272 173 277 176 281 28,000 -4 -11 1360 61 496 154 257 161 266 164 273 168 278 29,000 -6 -12 1293 58 476 147 248 154 261 159 269 163 276 31,000 -11 -16 1182 53 436 – – – – – – 141 248 149 262 154 270 33,000 -15 -20 1070 48 404 – – – – – –     – – –     – – – 135 248 144 262 35,000 -19 -24 981 44 370 – – – – – –     – – –     – – –     – – – – – – 130 247 Figure 7-76.  Maximum Cruise Power, 1800 RPM, ISA + 30 °C