Boeing 747-400: The only member of the 747 models, "Jumbo" family currently in production,  the  747-400 incorporates major aerodynamic improvements over earlier including the addition of winglets to reduce drag, new avionics, a new flight deck and the latest instandard -400, -flight entertainment systems. Available in Domestic (all single class), Combi and Freighter versions, the 747 offers a product  for every operator.
The first 747 delivery was in 1969 and Boeing delivered the first 747-400 twenty years later, in 1989, to Northwest Airlines.

Boeing 747SP: The additional range, 747 Special Performance was designed to offer airlines a longer-range 747 derivative prior to the advent of the -400. To achieve this the operating economics 747-SP used a shortened fuselage, as well as some lighter structural components, which had the unfavorable effect of causing poorer per seat compared to the 747-200.
Despite its limited sales success, the 747SP pioneered a number of long range nonstop services that are now commonly flown by the 747-400.

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