Sennheiser SI 234 - ANNEXE 802 Operations Instructions Page 351

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DA 42 NG AFM Airplane Description
Doc. No. 7.01.16-E Rev. 3 01-Apr-2014 Page 7 - 3
7.1 INTRODUCTION
Chapter 7 contains a description of the airplane and its systems, together with operating
instructions.
For details about optional equipment see Chapter 9.
7.2 AIRFRAME
Fuselage
The CFRP fuselage is of semi monocoque molded construction. The center wing is
attached to the fuselage with bolts. The two main spars and both nacelles are part of the
center wing. The two main spars are CFRP items. The engine compartment in each nacelle
is separated from the other structure with a firewall. The fire protection on the firewall is
of a special fire-resistant matting, which is covered on the engine side by stainless steel
cladding.
Wings
The wings have a front and rear spar; each wing has a top shell and a bottom shell; The
whole wing is ‘fail-safe‘ design. The wings, as well as the ailerons and flaps, are made
of GFRP/CFRP, and are principally of sandwich construction. An aluminum fuel tank is
installed in each of the wings.
Empennage
The airplane has a ‘T’ tail of GFRP/CFRP semi monocoque construction. Both the
stabilizers have twin spars. Rudder and elevator are of sandwich construction.
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