Crosswind Take off procedure
Objectives
- How to take off with cross wind.
Why?
- Most of the time you land with at least a slight croswwind.
Link
- Take-off
- Side slip
Review questions
- What’s the purpose of side slip ?
- What’s the procedure for entry and recovery from a side-slip?
- Why do we take off into the wind?
- Why do we use right rudder during a climb?
Headwind/crosswind calculations
- The angle between the runway and the wind direction.
- In METAR, TAF, FD the wind are given in true direction but runway orientation are given in magnetic direction. Add or subtract variation as required.
- Variable wind:
- If focusing on headwind component use the lowest wind speed.
- If focusing on crosswind component use the highest wind speed.
Basic theory
- The technique used during the initial takeoff roll in a crosswind is generally the same as used in a normal takeoff, except that the aileron control must be held INTO the crosswind. This raises the aileron on the upwind wing to impose a downward force on the wing to counteract the lifting force of the crosswind, and prevents that wing from rising.
- As the aileron’s effectiveness increases and the crosswind component of the relative wind becomes less effective, it will be necessary to reduce the aileron pressure gradually to keep the wings level.
- Flaps = more rolling tendency
Crosswind Takeoff procedures
- Flaps 0 degrees (check POH)
- Line up on runway centerline, nose wheel straight.
- Hold full aileron into the wind.
- Full power smoothly.
- Continue to hold aileron into the wind and reduce deflection as speed increases.
- Use right rudder to offset torque effect.
- Rotate at a speed slightly higher than normal.
- At a safe altitude turn into the wind (crab) to correct for the drift.
- Climb on centerline.
Review questions
- You are ready for takeoff, the wind come from your left side headwind, which position do you choose for the ailerons ?
- What do you have to take into consideration when calculating crosswind components from winds reported in a METAR?
- How are controls positioned and altered to counter for a crosswind?
