Are planes with more engines safer?

Q: Is a four-engine 747 safer than a two-engine 777? A: No, they are both safe. Having two additional engines is not a guarantee of increased safety. The engine failure rate of the B747 is higher, due to having two more engines and the older technology.



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Yes, a four-engine aircraft is safer than a two-engine aircraft in general because of higher redundancy. Two-engine aircraft used to be prohibited from transoceanic flights for that reason.

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Can planes fly on just one engine? Absolutely. That is what they are designed to do. By law, planes have to be able to fly from point A to point B, over water, on just one engine.

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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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Driving vs. Flying By the Numbers The overall fatality risk is 0.23% — you would need to fly every day for more than 10,000 years to be in a fatal plane crash. On the other hand, the chances of dying in a car collision are about 1 in 101, according to the National Highway Traffic Safety Administration (NHTSA).

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While it is possible for an A380 to operate on a single engine, it is not ideal as the aircraft would experience a decrease in speed, drag, and loss of altitude, making it crucial for the crew to restart the other engines or find a suitable airport for an emergency landing.

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We have made it clear that the Boeing 777 can actually fly with one engine without much trouble. Whether it is fuel starvation, the fan blades, or any mechanical failure causing the engine to fail, if any of the jet engines fail, the remaining engine can help the plane fly safely.

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Q: Is it safer to be on a smaller plane or larger one? A: It is not possible to make a safety differentiation between small or large airplanes because the terms are vague. Regional airline-size airplanes have a somewhat higher accident rate than do larger airline jets. Turboprops have a higher accident rate than jets.

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Conventional wisdom would indicate that the newer an airplane is, the safer that is. However, this is not necessarily the case. The truth is the safety and reliability of an airplane always comes down to how well the aircraft is taken care of.

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Even if some or all of an airplane's engines fail, it can still safely glide while descending in preparation of an emergency landing. An airplane won't just drop to the ground after its engines fail. Airplanes are designed with long wings to create lift, which essentially holds them in the air.

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