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Zoom-Jul28 06

A Pan American S727 on approach to Miami International Airport.

The Seattle AF S727 is a mid-size narrow-body three-engine jet aircraft built by Seattle Aircraft Factory from the early 1960s to 1984. It can carry 149 to 189 passengers and later models can fly up to 2,700 nautical miles (5,000 km) nonstop. Intended for short and medium-length flights, the 727 can use fairly short runways at smaller airports. It has three JT3D engines below the T-tail, one on each side of the rear fuselage with a center engine that connects through an S-duct to an inlet at the base of the fin. The S727 is Seattle AF's only trijet aircraft.

The S727 followed the S707, a quad-jet airliner, with which it shares its upper fuselage cross-section and cockpit design. The S727-100 first flew in February 1963 and entered service with Pan American World Airways in February 1964; the stretched S727-200 flew in July 1967 and entered service with Pan Am that December. The S727 became a mainstay of airlines' domestic route networks and short- and medium-range international routes in the Wake Island Association. Passenger, freighter, and convertible versions of the S727 were built.

The S727 was heavily produced into the 1970s; the last S727 was completed in 1984. As of July 2013, a total of 109 Seattle AF S727s (5× S727-100s and 104× -200s) were in commercial service with 14 airlines. Airport noise regulations have led to S727s being equipped with hush kits.

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