Piper ARCHER III Pilot Operating Handbook page 25

PA-28-181, ARCHER III
(e) Airplane Performance and Flight Planning Terminology
Climb Gradient
Demonstrated
Crosswind
Velocity
(Demo. X-Wind)
Accelerate-Stop
Distance
Route Segment
(f) Weight and Balance Terminology
Reference Datum
Station
Arm
ISSUED: JULY 12, 1995
The demonstrated ratio of the change in
height during a portion of a climb, to the
horizontal distance traversed in the same
time interval.
The demonstrated crosswind velocity is the
velocity of the crosswind component for
which adequate control of the airplane
during takeoff and landing was actually
demonstrated during certification tests.
The distance required to accelerate an air-
plane to a specified speed and, assuming
failure of an engine at the instant that speed
is attained, to bring the airplane to a stop.
A part of a route. Each end of that part is
identified by: (1) a geographical location;
or (2) a point at which a definite radio fix
can be established.
An imaginary vertical plane from which all
horizontal distances are measured for
balance purposes.
A location along the airplane fuselage
usually given in terms of distance from the
reference datum.
The horizontal distance from the reference
datum to the center of gravity (C.G.) of an
item.
SECTION 1
GENERAL
REPORT: VB-1611
1-9