Quoting Crownvic (Reply 9):
*If a fully loaded 747 takes off from Narita with passengers for LAX versus a fully loaded 747 with cargo to LAX (assuming nearly identical takeoff weights), how does the passenger plane arrive lighter than the cargo plane?????* |

Your assumption is in error. A fully loaded freighter for

LAX-

NRT will not have a nearly identical weight as a passenger aircraft operating

LAX-

NRT. Based on today's conditions, a 747-400 freighter could carry about 200,000 lbs from

LAX to

NRT. A 747-400 passenger airplane COULD carry the same weight, BUT will carry only 140-150,000 lbs. As a rough figure, a 747-400 freighter main deck capacity is 200,000 lbs. The main deck on a passenger airplane will top out at around 100,000 lbs, based on 500 seats at 200 lbs each. If each passenger has 60 lbs of bags, that's another 30,000 lbs, and the total load on that flight will be 130,000 lbs or so plus any freight. But in most cases, bags occupy more volume than an equivalent weight of freight will so the freight carried on the baggage compartments will be less as well.

However, as stated above, the freighter will probably stop in

ANC for fuel in order to carry the max payload.