With over 10 years in
aircraft industry S.G.Aviation has become one of the most successful
kit and ready to fly manufacturers in the world in its category. S.G.
Aviation manufactures the world’s finest Made in Italy style
aircrafts with a proven builder assistance program, flight training
and dedicated technical support, S.G.Aviation assures builders’
success in building and safety flying these aircrafts in a short
The Storm 400 offers superior performance and
capabilities for a 2+2 place, comfortable side-by-side seating,
improved cabin space, and best of all, the Storm 400 is available on
kit and ready to fly as other Storm models. The Storm 400 is easy to
build, easy to fly, true high performance airplane with the ability
to make long cross country trips. No other aircraft offers the
quality, performance, comfort and superior design of the standard
Storm 400. Longer 4 inches more than Storm 280 and 300 series, the
Storm 400 has large space area improved both inside and outside.
all sheet metal fuselage is a conventional semi-monocoque structure:
a basic rectangular section formed by four longerons, with skins
blind riveted to the longerons (and stiffeners). Fuselage structure
is a all-metal framework for cabin area high protection and semimonococque light alloy tail to support empennage. Easy to
inspect, the Storm 400 has immediate access’ for servicing to be
efficient and inexpensive at the same time.
The Storm 400 is a 2+2 place with improved cabin space than 280 and
300 series. The cabin width is an amazing 43 inches from window to
window. The wide cabin (1,10 m) features two side by side seats
adjustable via sliding rail stops, and a large space behind forward
seats that can be occupied by 2 passengers or by baggage.
The wide windshield offers a complete view unhindered by structural
elements, while large side windows allow for excellent visibility.
The entirely moving tailplane permits superior control and a high
degree of stick free stability, moving surfaces feature mass
The wing is of all-metal stressed-skin full-cantilever low-wing
design consisting of two wing panels bolted to a spar box assembly
in the fuselage. The wing has a high lift airfoil and wing tips to
maximize effective wing span. The electrically activated flaps,
allow stall speeds under 38Kts. With flaps deployed, a steep
approach is possible resulting in a very short landing distance.
The Storm 400 utilizes the same gear system of other Storm models,
developed specifically for flight training operations. The main gear
is a 2 aluminium springs that provide double cantilever deflection.
Four large bolts for each side hold up the 2 springs to a fuselage
It provides excellent grass-field capability, and is very durable,
simple and virtually maintenance-free. The nosewheel strut in the
three-gear version uses a single heavy-duty bungee for shock
absorbency. The nosewheel is steering, with direct linkage to the
rudder pedals for very effective and responsive ground handling and
tight turns. The main wheels are equipped with hydraulic disk
Specially studied wheel fairings are mounted on each wheel to reduce
parasite drag. Engine cowling is made up two parts and allows for
quick and complete opening. Fuel tanks are integral part of the wing
structure and feature 65 litre capacity per each half wing.
Instrument panel meets General Aviation standards both in size and
quality allowing for installation of a wide variety of flight
instrumentation, engine controls and com/nav apparatus.
Flight controls are traditional type with dual stick, dual rudder
pedals and dual throttle knobs on dashboard. Longitudinal trim and
electrical flap controls with position indicators are also located
Cabin ventilation is adjustable air vents fed via buried scoops.
2 + 2
rate of climb
landing distance, ground roll
limiting and recommended speeds
design manoeuvring speed (Va)
never exceed speed (Vne)
stall, power off (Vsl)
landing approach speed
All specifications are based on manufacturer's