For the L1011 to fly JNB-CGH:
Target weight: 450,854 lbs or less. (This is calculated by a proportion, runway requirement/MTOW x actual runway/target weight. Solve for target weight. In this case: 7200/510,000 x 6365/target weight. Cross multiply and solve for the target weight and you get 450,854.)
Fuel w/ reserve requires 22,288 gallons which weighs 152,451 lbs.
So we are at 245,400 (OEW) + 152451 = 397,851 lbs.
Misc weight per the formula is 330 * 10 + 700 = 4,000 lbs. Now we're at 401,851 lbs.
450,854 - 401,851 = 49,003 lbs remaining for the payload. Passengers weigh 220 lbs each including luggage, so 49,003 / 220 = 222 passengers.
So a L1011 can indeed fly from JNB to CGH, the load will just be limited to a maximum of 222 passengers.
The same can likely be said for the other aircraft.
Target weight: 450,854 lbs or less. (This is calculated by a proportion, runway requirement/MTOW x actual runway/target weight. Solve for target weight. In this case: 7200/510,000 x 6365/target weight. Cross multiply and solve for the target weight and you get 450,854.)
Fuel w/ reserve requires 22,288 gallons which weighs 152,451 lbs.
So we are at 245,400 (OEW) + 152451 = 397,851 lbs.
Misc weight per the formula is 330 * 10 + 700 = 4,000 lbs. Now we're at 401,851 lbs.
450,854 - 401,851 = 49,003 lbs remaining for the payload. Passengers weigh 220 lbs each including luggage, so 49,003 / 220 = 222 passengers.
So a L1011 can indeed fly from JNB to CGH, the load will just be limited to a maximum of 222 passengers.
The same can likely be said for the other aircraft.
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