Diamond DA20-C1 - Flight Performance and Flight Planning; Weight and Balance

DA20-C1 Flight Manual General
Doc # DA202-C1 April 06, 2010 Page 1 - 11
Revision 25
1.11.4. Flight Performance and Flight Planning
Demonstrated Crosswind Component:
The maximum speed of the crosswind component at which the manoeuvrability
of the airplane during take-off and landing has been demonstrated during type
certification test flights.
Service Ceiling:
The altitude at which the maximum rate of climb is 0.5 m/s (100 ft/min.).
1.11.5. Weight and Balance
Reference Datum (RD):
An imaginary vertical plane from which all horizontal distances for the center of
gravity calculations are measured. It is the plane through the leading edge of the
wing root rib, perpendicular to the longitudinal axis of the airplane.
Station:
A defined point along the longitudinal axis which is generally presented as a
specific distance from the reference datum.
Lever Arm:
The horizontal distance from the reference datum to the center of gravity (of a
component).
Moment:
The weight of a component multiplied by its lever arm.
Center of Gravity (CG):
Point of equilibrium for the airplane weight.