How does weight affect flight?

Excessive weight can negatively affect an airplane's speed, take-off and landing distance, rate of climb, ceiling (maximum altitude), maneuverability, and range. Excessive weight often requires a pilot to reconsider the requirements of the trip. If maximum range is required, occupants or cargo loads must be decreased.



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Excessive weight can negatively affect an airplane's speed, take-off and landing distance, rate of climb, ceiling (maximum altitude), maneuverability, and range.

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Weight is a major factor in aircraft construction and operation and demands respect from all pilots. The force of gravity continuously attempts to pull an aircraft down toward Earth. The force of lift is the only force that counteracts weight and sustains an aircraft in flight.

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Excessive weight can negatively affect an airplane's speed, take-off and landing distance, rate of climb, ceiling (maximum altitude), maneuverability, and range. Excessive weight often requires a pilot to reconsider the requirements of the trip. If maximum range is required, occupants or cargo loads must be decreased.

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When your extra baggage brings you over the allowance weight for your luggage, you can expect to pay a hefty fee for storing it in the hold, which can sometimes work out more expensive than the flight itself!

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If your suitcase is over the limit set by your airline company, you'll need to pay an additional fee for your overweight suitcase. Another option you can do is to remove some things from your suitcase to reduce the weight. Most airlines won't accept suitcases over 100 lbs (45 kgs).

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Most airlines are extremely strict checking your baggage weight and will charge you an outrageous amount of money for over their set limit. If you expect to go over the limit it is cheaper to buy the extra weight when you book the flight online.

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As The Independent has reported previously, weighing every passenger before a flight can increase safety and cut the environmental harm caused by each flight. At present, airlines use “assumed mass” – estimating the total weight of the passengers by using set figures. Typically each passenger is assumed to weigh 88kg.

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How does the airliner crew know if the plane is overweight before takeoff? To ensure that an airliner is within its weight and balance limits, the crew uses a system that consists of three elements: weighing, recording, and loading.

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What about stepping on a scale? Many reacted less-than-fondly to an announcement earlier this month that Korean Air, a South Korea-based airline, planned to weigh passengers before boarding. A representative for the airline told CNBC the practice would last for about three weeks, and is required by law.

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Yes, a weight and balance issue can be more critical on smaller airplane because a even a small error accounts for a larger percentage of the total weight. A 500-lb. error on an airplane that weighs 5,000 lbs., adds up to a larger percentage of the total weight.

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While some travelers may be surprised to find themselves asked to step on a scale, this decision isn't made by airlines – it's often mandated by governmental airline regulators.

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If your bag is over 50 lbs (23 kg), or if its length, width, and height added together are over 62 inches (157 cm), you may be charged an additional fee, on top of the normal bag fee.

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On flights within the United States, Canada (including the U.S. Virgin Islands and Puerto Rico), bags exceeding 100 lbs. (45.36 kg) are not allowed. On flights between North/South/Central America and Europe/North Africa, bags exceeding 70 lbs. (31.75 kg) are not allowed.

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Pay a Fee at the Airport Every airline company has its own rules for overweight suitcases, but generally speaking, if your suitcase is just over 50 lbs (23 kgs), which is the limit for most airlines, then you can still bring your suitcase with you. In that case, all you need to do is pay the fee, and you're good to go.

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That depends if you have several kg overweight and are asking for the price per kg or if you really just only have one single kg extra. For a singe kg above the limit you most probably will not get charged, especially not on a full service airline. There is usually a tolerance in the range of 2–3kg, sometimes up to 5.

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Luggage scales can use digital or analog technology to weigh your bag. Most luggage scales are fairly accurate, but it's always a good idea to stay a pound or two under the limit in case there's any fluctuation with the scale at the check-in desk.

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How much is 23 kg in pounds luggage? The recommendations for checked baggage are: advised maximum weight 23 kg (50.7 lbs), weight limit 32 kg (70.6 lbs), advised maximum size 158 cm (62.2 in) length + width + height, limit 203 cm (nearly 80 in).

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On all flights, except to and from the United States, each passenger can purchase a checked luggage weight allowance of 20 kg, 25 kg, 30 kg, or 40 kg. It doesn't matter how many bags the total weight is split into, but no bag can be over 32 kg (70 lbs) in weight and 319 cm (126 inches) in total dimensions.

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In general, obese passengers on airlines who require a seatbelt extender and/or cannot lower the armrests between seats are asked to pay for a second seat on their flight, unless there are two empty seats together somewhere on the plane.

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