Diamond DA 42 NG, Maintenance Manual

Page: 1899 / 2339

AIRCRAFT
DA 42 NG AMM Wings
Doc # 7.02.15
Rev. 4
57-60-00
Page 3
15 Mar 2018
2. Description
Figure 1 shows the aileron assembly.
The aileron has a bottom shell and a top shell. The bottom shell has inner and outer CFRP skins. The
outer and inner layers of the skins are GFRP. The skins bond to a rigid plastic foam core. The leading
edge of the shell bends up to form a web. It then curves forward to form a shroud which seals the gap
between aileron and wing when the aileron moves down.
The ends of the bottom shell also bend up to close the ends of the aileron. The leading edge, the ends
and the area where the horn attaches have more carbon fiber cloth to give more strength and stiffness.
The top shell has inner and outer CFRP skins. The outer and inner layers of the skins are GFRP. The
skins bond to a rigid plastic foam core.
The aileron horn is an aluminum alloy component. Three bolts attach the horn to the bottom surface
of the aileron. A small hole in the leading edge of the aileron gives access to the front attaching nuts
and washers. The horn also makes one of the aileron hinges.
Each aileron has three hinges (as well as the aileron horn). Two bolts attach each hinge to the leading
edge of the aileron. A small hole in the middle of the hinge gives access to the attaching nuts and
washers. Each hinge has a flanged bush at the inboard end. A plastic plug seals the outboard end.