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Maintenance Manual
FLY SYNTHESIS TEXAN
TOP CLASS 580 ISR
(For Rotax 912 ULS
versions)
Identification: MM_TC_580_Rev.2
Page: 19 of 77
Date: 15/02/11
Issued: C. Cosatto
Verified: C. Cosatto
Approved: C. Cosatto
Revision Description:
Placard update
4.1 INTRODUCTION
In order to obtain the best flight performance, safety, stability and control, the airplane
must be loaded within the Centre of Gravity (balance) inside the prescribed limits.
Operation beyond the prescribed limits may cause instability and loss of control, or too
much stability with not enough control. Both cases will lead to unsafe conditions and could
result in an accident, with serious or fatal personal injury.
Exceeding the Centre of Gravity limits is
PROHIBITED
Weight limitations are important as the performance and the integrity of the structure will
decrease to below acceptable values when exceeding the maximum Take-Off Weight.
Operation at weights above the limits may thus lead to unsafe conditions and could result
in a serious accident.
Exceeding the maximum weights is
PROHIBITED
4.2 WEIGHT LIMITATIONS
Rotax 912
Maximum Take-Off Weight
580 kg
Maximum Pilot and Passenger Weight
180 kg
Minimum Solo Pilot Weight
70 kg
Luggage Compartment,
16 kg
Minimum Empty Weight
330 kg
4.3 CENTER OF GRAVITY LIMITATIONS
Forward Limit
:
377 mm behind the reference datum (27% MAC)
Aft Limit
:
504 mm behind the reference datum (36% MAC)
The longitudinal location of the Centre of Gravity (CG) is measured as the distance behind
a reference datum (RD).
The reference datum is defined as the vertical plane of the leading edge of the wing, when
the airplane is level.
The mean Aerodynamic Chord (MAC) is the average chord of a wing, for this airplane it is
1400 mm.
The 0% of the MAC is the reference datum (RD).
The location of the CG can be defined by reference to the % MAC.
4.4 WEIGHING PROCEDURE
Weighing must be done in a closed hangar with no chance of wind affecting the
measurements.
The floor must be level, preferably smooth concrete or any other smooth hard surface.