STEMME S12, Maintenance Manual

Page: 36 / 290

DOCUMENT NUMBER:
L500-912.820 ISSUE JUL 20, 2016
AMENDMENT: 00
DATE: --
CHAPTER- PAGE 3-2
MAINTENANCE MANUAL STEMME S12
3.1.2 FUSELAGE
The fuselage is a modular construction of three assemblies with bolted joints: The forward fuse-
lage section (CFRP) construction, the center fuselage framework (steel frame) and the tail boom
(CFRP construction).
Loads from the fuselage front section, the wing, the landing gear, the power-plant and the tail
unit are transmitted by center steel frame.
The center fuselage framework is covered by self-supporting fairings (upper fairing and engine
cowlings LH / RH as well as lower fairing) of GFRP sandwich. The attachment of the fairings is by
means of camlocks, which can be easily opened with a screw-driver. The upper fairing includes
an oil service access door, which can be opened without a tool.
3.1.3 TAIL UNIT
Horizontal Tail
• T-arrangement, easily removable (simple spring-bolt connection),
• Stabilizer as sandwich construction of CFRP, elevator made of CFRP.
• Elevator gaps sealed by elastic tape.
• Boundary layer turbulator (adhesive 60° zigzag tape, leading edge at 65% of chord,
12 x 0.5 mm / 0.47 x 0.02 in) on upper and lower side for defined flow transition.
Vertical Tail
• Stabilizer as a sandwich construction of CFRP, rudder as a sandwich construction of GFRP,
• Rudder gap sealed by elastic tape with integrated zigzag turbulator (combi-tape),
• COM antenna integrated in rudder.
3.2 COCKPIT
3.2.1 GENERAL
The two seats are arranged side by side (forward of the wing) and the S12 is equipped with dual
controls. The FRP seat backrests are multi-adjustable. Each seat is equipped with 4-point seat
belts with a center locking mechanism.
Between the seats a console covers both systems and the drive shaft tunnel. The instrument panel
is designed in mushroom-style panel arrangement.
The one-piece canopy is hinged at the front and held in its opened position by two gas springs.
Three canopy locks on each side of the canopy frame, left hand and right hand side, are operated by
one locking lever on each side. The locking levers are mechanically interconnected by two bowden
cables so that they act simultaneously. One additional lock to improve canopy emergency jetti-
soning (“Röger-hook”) is installed in the rear upper canopy frame, operated by adjacent handle.