Operate in accordance with Manufacturer's Limitations: Aircraft manufacturers publish a tailwind component limit for both takeoff and landing in the AFM. In most cases, it is in the order of 10 knots but may be as high as 15 knots.
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Aircraft manufacturers publish tailwind limitations in the Aircraft Flying Manual and are, in most cases of modern airline aircraft, in the order of 10 to 15 kts. The actual wind is a random phenomenon and varies in time and location.
There is no headwind limitation for most commercial aircraft for take-off, and therefore is no maximum overall limit for take-off (or landing). If there was a 100mph wind, all of which was a headwind component, in theory the aircraft wouldn't be restricted from taking off.
Autopilot / Flight Director System# Maximum allowable wind speeds, when conducting a dual channel Cat II or CAT III landing predicating on autoland operations, are: Headwind 25 knots. Crosswind 20 knots. Tailwind 10 knots.
Because headwind increases the lift, pilots prefer to land and take off in headwind. Tailwind is wind blowing from behind the aircraft. It reduces the lift and aircraft generally avoid taking off or landing in tailwind.
On take-off and landing, headwinds are good because they allow you to use a shorter runway. In flight, headwinds are bad because they slow you down and require that you use more fuel to get to your destination. Conversely, tailwinds are bad on take-off and landing, but are good in flight.
During take off and landing, headwind increases the airflow, hence the necessary lift is achieved earlier and at lower speeds (the wind speed is added to the aircraft speed). As a result, less runway is required to perform a safe take off or landing.
Other special cases include a tailwind, where the plane and wind are acting in the same direction. As you may suspect, the speed of the aircraft increases when there is a tailwind and decreases when there is a headwind.
Even a bit of tailwind can be a hazard. Tailwind conditions can have adverse effects on aircraft performance and handling qualities in the critical flight phases of takeoff, approach and landing. Tailwind, for instance, increases the required runway length to land on or takeoff from.
The Boeing 747 Jumbo Jet reached a top speed of 825 miles per hour which was boosted by a strong jet-stream and tailwind of over 200 miles per hour. Aircraft that cross the Atlantic between North America and Europe flying eastbound are usually boosted by a tailwind that can shave several hours off their flight time.
Tailwinds And Landing DistanceMost GA aircraft performance charts give you the same guidance: for operation with tailwinds up to 10 knots, increase distances by 10% for each 2 knots. That means if you're landing with a 10 knot tailwind, your landing distance increases by 50%.