747-400ERF
The 747-400ERF (747-400ER Freighter) is the freight version of the −400ER, launched on April 30, 2001.[18] The 747-400ERF is similar to the 747-400F, except for increased gross weight capability which allows it to carry more cargo weight. Unlike the 747-400F, the type is not fitted with cargo compartment fuel tanks. The 747-400ERF has a maximum takeoff weight of 910,000 pounds (412,769 kg) and a maximum payload of 248,600 pounds (112,760 kg). It offers cargo airlines the choice of either adding 22,000 pounds (9,980 kg) more payload than other 747-400 freighter variants, or adding 525 nautical miles (972 km) to the maximum range.[27]
The -400ERF has a maximum range of 5,700 miles (9,200 km), about 326 miles (525 km) farther than other 747-400 freighters, and has a strengthened fuselage, landing gear and parts of its wing, along with new, larger tires. The first −400ERF was delivered to Air France (via ILFC) on October 17, 2002. Boeing has delivered 40 Boeing 747-400ERFs with no outstanding orders as of 2009.[3] The last 747-400 was a −400ERF delivered on December 22, 2009.[6] The new 747-8 Freighter has more payload capacity but less range than the 747-400ERF.
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