S201 AFM
7 - AIRPLANE AND SYSTEMS
DESCRIPTION
7.3 - AIRFRAME
27/06/2019
SONAIR-S2-D-MAN-006
Page : 7-3
Rev. : A
7.3
AIRFRAME
The whole airplane structure (wing, fuselage and empennage) is of an all-metal
semi-monocoque construction with single curvature stressed aluminium alloy
skins riveted to spars, stiffeners, ribs and frames.
Construction is of 6061-T6 aluminium alloy sheet assembled by the means of
blind rivets, with exception of the main spar being built of 2024-T3 aluminium
alloy. This high strength aluminium alloy construction provides long life and low
maintenance costs thanks to its durability and corrosion resistant characteristics.
The wing has a high lift airfoil having the advantage of being only slightly
sensitive to rain and reasonable amount of dust and insects. It is equipped with
single slotted Fowler type flaps.
S201 Fuselage structure:
S201 Wing structure: