Aircraft Operating Instructions (AOI)
Type:
CT
Series:
CTLS
LSA
Page: 5-4
AU 010 11000
Revision No. 4
Date: 29 Apr 2008
5.3. Significance of the wind component
Wind directly affects the flight path and thus aircraft performance. Two diagrams are
presented below which show the significance of the wind component.
5.3.1.
Wind influence on take-off roll and landing
To determine whether the aircraft can take-off safely, it is necessary to determine the
prevailing crosswind component. On the one hand, this determines the appropriate
take-off procedure while, on the other hand, it ensures that the demonstrated
permissible crosswind component for take-off and landing is not exceeded. The
following diagram is used to determine the crosswind component.
Crosswind
Taxi- or Flight Direction
Headwind
Crosswind
Taxi- or Flight Direction
Headwind
An example is shown in the diagram. Take-off direction is 120°. The wind direction is
070°, wind speed 11 kts. The wind angle is thus 120° - 70° = 50°. Wind speed is
plotted along the circle segment (1) to the point where it intersects the wind angle (2).
The corresponding value on the x-axis (3) results in a head wind component of 7.1
kts, the value on the y-axis (4) in a crosswind component of 8.4 kts.
Values for landing are determined in a similar manner.