Why does the Boeing 727 have 3 engines?

Eastern Airlines wanted a third engine for its overwater flights to the Caribbean, since at that time twin-engine commercial flights were limited by regulations to routes with 60-minute maximum flying time to an airport (see ETOPS). Eventually, the three airlines agreed on a trijet design for the new aircraft.



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It has three Pratt & Whitney JT8D engines. One engine is at the back, and the other two are on the sides of the plane. The 727 is the only plane made by Boeing which has three engines. The Boeing 727 was made after the Boeing 707.

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Whilst it's rare to see a 727 in the air these days, there are still some rare flying examples operating in unique roles. Let's take a look at the background and outlook for the iconic Boeing trijet.

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Increases Passenger Capacity The Airbus A380, for example, has a passenger capacity of 853. Like most other wide-body airplanes, the Airbus A380 is powered by four engines. This allows it to carry more passengers than its two-engine and single-engine counterparts.

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One of the unique features of the 747 was its fifth pod. This 'spare' engine mount gave it the ability to lug along an extra engine, something it was capable of doing even on a revenue flight. Of course, the efficiency of the flight would take a hit, but reportedly there were no issues with handling as a result.

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The 777 provides the most payload and range capability and growth potential in the medium-sized airplane category — all with lower operating costs. Since its entry into service in June 1995, Boeing has expanded the 777 family to five passenger models and a freighter version.

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The only airlines I can think of off hand that flew regularily scheduled B727 trans-Atlantic flights are Wardair and Sterling. But there is no way these aircraft could have, (nor did) fly across the Atlantic non-stop. That would be the kicker for your Mom. If it was non-stop, then it was not a B727.

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