TM 1-1510-225-10 7-64 NORMAL 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 10 5 2230 100 978 242 238 243 239 243 240 244 241 2000 7 1 2230 100 950 239 243 240 244 241 245 242 246 4000 3 -3 2230 100 926 237 247 238 248 239 249 240 250 6000 -1 -7 2230 100 900 234 252 236 253 237 254 237 255 8000 -5 -11 2230 100 878 232 257 233 258 234 259 235 260 10,000 -8 -15 2230 100 856 230 262 231 263 232 264 233 265 12,000 -12 -19 2230 100 838 227 267 229 268 230 270 231 271 14,000 -16 -23 2230 100 824 225 272 226 274 227 275 228 276 16,000 -19 -27 2230 100 812 222 278 224 279 225 281 226 282 18,000 -23 -31 2141 96 776 216 279 218 281 219 283 221 284 20,000 -27 -35 2052 92 734 210 279 211 281 213 283 214 285 22,000 -31 -39 1940 87 698 203 278 205 282 207 284 208 286 24,000 -35 -43 1829 82 654 195 277 197 281 200 283 201 286 26,000 -39 -47 1695 76 608 186 274 189 278 191 281 194 284 28,000 -44 -51 1561 70 560 176 269 180 274 183 278 185 282 29,000 -46 -52 1494 67 536 171 265 175 271 178 276 181 280 31,000 – – –     – – – – – – – – – – – – – – – – – –     – – –     – – –     – – – – – –     – – –     – – – 33,000 – – –     – – – – – – – – – – – – – – – – – –     – – –     – – –     – – – – – –     – – –     – – – 35,000 – – –     – – – – – – – – – – – – – – – – – –     – – –     – – –     – – – – – –     – – –     – – – Figure 7-60.  Normal Cruise Power, 1800 RPM, ISA – 10 °C