Boeing 747SP / United Military 1920-1939 including several conversions to special-duty

including several conversions to special-duty variants

The aircraft achieved a speed of Mach 1

evacuations and maritime special operations

the Hawker Aircraft Company built 2 prototypes

North American F-82 Twin Mustang airplane model

Boeing 747SP / United Military 1920-1939 including several conversions to special-dutyBoeing 747SP United Airlines airplane model. The SP suffix in 747SP stands for Special Performance, and points to the ultra long range abilities of these 747 variants that preceded the current 747 400 by 15 years. The 747SP's range is best illustrated by the spate of long range distance records it set in the mid 1970s. The most prominent of those was the delivery flight of a South African Airways SP, which over March 23 24, 1976, flew nonstop with 50