Title: Calculate landing speed and distance.
Course: Aircraft Pilot Training II (20053-II) > Section: Describing Aircraft Performance

Calculation should include the use of an airplane landing distance graph and table and should reflect the following concepts:

- Landing speed is not independent of weight.
- Landing speed is a percentage of stall speed, but stall speed is dependent on aircraft weight.
- Stall speed will increase with a heavier airplane; therefore, landing speed, as a percentage of stall speed, will also change with weight.

Calculating landing distance should include using the table:

- Use the landing distance chart in the POH/AFM.
- Identify the landing type (e.g., short field) and associated conditions.
- Identify the field pressure altitude.
- Identify the temperature at time of landing and locate the column nearest to that temperature.
- Move down in that respective column to the associated pressure altitude to find the ground roll and distance graph and table required to clear a 50-foot obstacle.
- Apply variables to distance as necessary (e.g., grass runway, headwind, tailwind).
- These numbers are associated with a perfectly performed landing; it is recommended to add some buffer room.

Calculating landing distance should include using a landing distance chart:

- Identify the outside air temperature (OAT).
- Identify the pressure altitude and draw a line from the OAT upwards until it intersects the respective pressure altitude line.
- Move straight across to the next section and reference the nearest trend lines to draw a line until it intersects the aircraft weight (pounds), then move straight across to the wind component.
- Follow the tailwind or headwind component trend lines until they hit the appropriate wind speed, then move straight across to obstacle height.
- Reference the nearest trend lines and draw the line accordingly, depending on the height of the obstacle.
- Move straight across to find the total distance.

PLT008

Process/Skill Questions:

- How do you think the landing speed of an aircraft is determined?