Section 1
Model GA8-TC 320
General
Page 1-10
5 Feb 2009
C01-01-08
1.3.5. Engine Controls and Instruments
Throttle Lever
The lever which the pilot uses to control the engine manifold pressure.
Pitch Lever
The lever which the pilot uses to control the engine RPM.
Mixture Control
The control that is used to vary the fuel/air ratio available to the engine.
MAP Gauge
The instrument that indicates engine inlet Manifold Air Pressure.
Tachometer
The instrument that indicates the engine RPM.
1.3.6. Aircraft Performance and Flight Planning Terminology
Climb Gradient
The ratio of the change in height during a climb, to the horizontal distance
travelled.
Demonstrated Crosswind Component
The crosswind component, during take-off and
landing, for which adequate control of aircraft was actually demonstrated during certification
tests.
1.3.7. Weight and Balance Terminology
Reference Datum
An imaginary vertical plane from which all horizontal distances are measured
for balance purposes.
Station
A location along the aircraft fuselage usually given in terms of distance from the
reference datum.
Arm
The horizontal distance from the reference datum to the centre of gravity (C of G) of an
item.
Moment
The product of the weight of an item multiplied by its arm.
Index Unit
Moment divided by a constant. Used to simplify balance calcula tions by reducing
the number of digits.
Centre of Gravity
(C of G) The point at which an aircraft would balance if suspended. The
distance from the C of G to the reference datum can be found by dividing the total moment by
the total weight of the aircraft.
C of G Arm
The arm obtained by adding the aircraft’s individual moments and dividing the sum
by the total weight.
C of G Limits
The extreme centre of gravity locations within which the aircraft must be operated
at a given weight.
Useable Fuel
The quantity of fuel available for flight planning purposes.
Unusable Fuel
The quantity of fuel (determined under adverse fuel flow conditions) that is not
available for flight.
Empty Weight
Weight of aircraft with unusable fuel and full oil.
Useful Load
Difference between take-off weight and empty weight.
Maximum Take-Off Weight
Maximum weight approved for take-off.
Maximum Landing Weight
Maximum weight approved for the landing.
Summary of Contents for GIPPSAERO GA8-TC 320
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