How often do airlines replace planes?

On average, a plane can fly for 30 years before it needs to be retired. Usually, a plane's life span isn't measured in years but rather in pressurization cycles. Every time a plane takes flight, it is pressurized, which puts stress on the fuselage and the wings. This is called metal fatigue.



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AMARG: The World's Biggest Boneyard. On average, an aircraft is operable for about 30 years before it has to be retired. A Boeing 747 can endure about 35,000 pressurization cycles and flights—roughly 135,000 to 165,000 flight hours—before metal fatigue sets in. 747s are retired after approximately 27 years of service.

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Airplanes are disassembled at aircraft-recycling centers where non-metal components with no recycle value are discarded, major components are dismantled and metal alloy components are sorted based on their composition. The metal alloys are then remelted together to form a single homogenous alloy from scraps.

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While the average age of a U.S. domestic commercial airliner is 11 years old, it is not uncommon for aircraft to still be in service at 24, 25, even 30 years old.

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Unlike cars and houses, airplanes are inspected annually and maintained to a high standard. As long as the pilot puts the time and money into it, and takes it to a mechanic experienced in the peculiarities of the type, it is indeed safe to fly a 40-year-old airplane.

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Sure, the 747 is a Type Certified and airworthy aircraft, the FAA does not really care who owns it so long as they play by the rules. Boeing even sells them directly to the private market via their BBJ line. There are even a few used ones listed for sale right now.

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As long as they're well maintained, then yes 20, 30 or 80 year old airctaft are safe to fly. Yes, if the aircraft is maintained according to manufacturer requirements, common sense standards, and FAA (U.S.) Airworthiness Directives.

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For flights landing at U.S. airports, airlines are required to provide passengers with an opportunity to safely get off of the airplane before 3 hours for domestic flights and 4 hours for international flights.

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Delta Air Lines is the largest by revenue, assets value and market capitalization.

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Flying Is Only Getting Safer Over Time Global flight accident rates have been steadily declining over the years for a number of reasons, according to the International Civil Aviation Organization (ICAO).

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Is it safe to fly a 30 year old plane? Aircraft age is not a safety factor. However, if the aircraft is older and hasn't been refurbished properly, it may cause flyers some inconvenience such as overheating, faulty air conditioning, or faulty plumbing in the lavatory.

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Theoretically it is possible but even a supersonic jet would be hindered by factors such as speed restrictions and in-flight refuelling.

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Built in 1967 to produce the mammoth jet, it remains the world's largest manufacturing plant according to Boeing. But after five decades, customer demand for the 747 eroded as Boeing and Airbus (AIR.PA) developed more fuel efficient two-engine widebody planes.

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Although air travel is one of the safest forms of transport, the environment within the aircraft cabin may have adverse physiological effects on passengers, especially those with underlying medical problems. The older person may be more susceptible to complications during long-distance flights [1].

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Since commercial flights are pressurized to 6000 – 8000 ft, older adults with stable cardiovascular disease should be able to fly without risk.

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