At what speed does a commercial passenger jet take-off and land at?
A look at the speeds the mighty Boeing 747 takes off and lands at
What speed does a Boeing 747 take off and land at?
Most airlines and aircraft have a facility to de-rate thrust (or use assumed temperatures) for take off. This occurs on runways where the aircraft has extra performance in hand e.g. The aircraft does not need the full length of the runway to take off. This procedure is essentially where pilots will take off with less than max thrust to save engine wear.
Speeds vary according to performance, environmental conditions and weight but typically a fully loaded 747 on a normal long haul flight would take off from a typical length runway at around 160 knots which is 184 mph.
A typical fully loaded 747 would be landing at around 25,0000kgs. The landing speed would be around 145kts-150kts (166mph-172mph) depending on the landing flap setting selected.
The greater the flap setting the lower the speed. We generally fly the approach speed faster than this to allow a ‘buffer’. In light wind conditions we would add 5 kts to the landing speed but in strong wind conditions up to 20kts can be added.