FUSELAGE
The front part of the fuselage is made up of a mixed structure: a truss structure
with special steel members for cabin survival cell, and a light-alloy semi-
monocoque structure for the cabin's bottom section. The aft part of the fuselage is
constructed of an aluminum alloy semi-monocoque structure. The engine housing
is isolated from the cabin by a stainless steel firewall; the steel stringers engine
mount is attached to the cabin's truss structure in four points.
EMPENNAGES
The vertical tail is entirely metal: the vertical stabilizer is made up of a twin spar
with stressed skin while the rudder consists of an aluminum torque stringer
connected to light alloy ribs and skin. The horizontal tail is an all-moving type
(stabilator); its structure consists of an aluminum tubular spar connected to ribs
and leading edge; wrap-around thermoretractible synthetic material covers the
stabilator structure.
FLIGHT CONTROLS
Aircraft flight controls are operated through conventional stick and rudder
pedals. Longitudinal control acts through a system of push-rods and is equipped
with a trim tab. Aileron control is of mixed type with push-rods and cables; the
cable control circuit is confined within the cabin and is connected to a pair of
push-rods positioned in the wings that control ailerons differentially. Aileron
trimming is carried out on ground through a small tab positioned on left aileron.
Flaps are extended via an electric servo actuator controlled by a switch on the
instrument panel. Flaps act in continuous mode, the indicator displays the two
positions relative to takeoff (15°) and landing (38°). A breaker positioned on the
right side of the instrument panel protects the electric circuit.
Longitudinal trim is performed by a small tab positioned on the stabilator and
controlled via an electric servo by pushing an Up/Down push-button on the
control stick. A shunt switch placed on the instrument panel enables control of
either left or right stick; in addition, a safety switch positioned by the trim
indicator shuts off power from the circuit in case of emergency (see section 3).
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