# Autobrake Landing Distance Calculation

In order to calculate the Landing Distance with the different Autobrake settings, use one of the following formulas below.

## Rule Of Thumb

Autobreak LOW

Landing Distance = `Grossweight (GW) in tons [t] x 30`

Autobreak MEDIUM

Landing Distance = `Grossweight (GW) in tons [t] x 20`

Wet Runway

Landing Distance = `Calculated LD in meters [m] + 15%`

## Examples

Use these examples to help with the calculation.

### Autobrake LOW

Example with AutoBreak LOW and a Grossweight (GW) of 60 [t].

LD = `Grossweight (GW) in tons [t] x 30`

Example

With a GW of 60 [t] the calculation would be as follows:

LD = `60 [t] x 30 = 1800 [m] required Landing Distance`

### Autobrake MEDIUM

Example with AutoBreak MEDIUM and a GroundWeight of 60 [t].

LD = `Grossweight (GW) in tons [t] x 20`

Example

With a GW of 60 [t] the calculation would be as follows: LD = 60 x 20 = 1200 [m] required Landing Distance

### Wet Runway

Caution

In case the runway is wet, add another 15% to that.

Taken the example above, with a calculated Landing Distance of 1200 [m], the calculation for a wet runway would be:

`1200[m] + 15% (180[m])` = 1380 [m]

Warning

Only for Flight-Simulation!