Cirrus SR22 Pilot Operating Handbook page 25

Cirrus Design
SR22
Basic Empty
Weight
MAC
LEMAC
Maximum
Gross Weight
Maximum
Zero Fuel
Weight
Useful Load
Station
Reference
Datum
Tare
P/N 13772-004 P/N 13772-004
Original Issue
Basic Empty Weight is the actual weight of the
airplane including all operating equipment that has a
fixed location in the airplane. The basic empty
weight includes the weight of unusable fuel and full
oil.
Mean Aerodynamic Chord is the chord drawn
through the centroid of the wing plan area.
Leading Edge of Mean Aerodynamic Chord is the
forward edge of MAC given in inches aft of the
reference datum (fuselage station).
Maximum Gross
permissible weight of the airplane and its contents
as listed in the aircraft specifications.
Maximum Zero Fuel Weight is the maximum
permissible weight of the airplane and its contents
minus the total weight of the fuel onboard.
Useful Load is the basic empty weight subtracted
from the maximum weight of the aircraft. It is the
maximum allowable combined weight of pilot,
passengers, fuel and baggage.
Station is a location along the airplane fuselage
measured in inches from the reference datum and
expressed as a number. For example: A point 123
inches aft of the reference datum is Fuselage
Station 123.0 (FS 123).
Reference Datum is an imaginary vertical plane
from which all horizontal distances are measured for
balance purposes.
Tare is the weight of all items used to hold or
position the airplane on the scales for weighing.
Tare includes blocks, shims, and chocks. Tare
weight must be subtracted from the associated
scale reading.
Weight is the
Section 1
General
maximum
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