5.4 Aircraft Secondary Structures (AS Structures)
All AP Structures are composed of AS Structures. An AS Structure may operate with
different Components (Parts), however an AS Structure is airworthy only with the parts
ordered and received directly from Apollo or are declared by Apollo to be applicable.
Any change on an AP or an AS Structure without the approval of the Apollo Ltd may
generate legal consequences, especially if an aircraft accident or flying incident occurs
and the investigation reveals causes in connection with aircraft airworthiness.
In order to find the way among the actions which are to be followed during inspection,
maintenance and repair AS Structures are listed in 5.4.1 – 5.4.5. together with their
ground operation type (Heavy/Light, requirements see: 5.2). For the sake of discovering
hidden damages, faults or discrepancies when preparing any inspection the aircraft is to
be precedingly cleaned and attended.
When inspecting, maintaining, repairing and altering the data in 9.3.5 Component
replacement schedule is to be considered.
5.4.1 WING
The wing Apollo C15 DD is the primary structure of the WSC aircraft type Apollo
C15 DD - Delta Jet 2 - R912 producing lift. Structure, strength, stability and
controllability are part of the thematic of the theoretical course for WSC licence. The
publisher of this Manual supposes that the pilot has already been educated in basic
flight mechanics and wants to inform the user primarily about the aerial and ground
operation of the type as a basis for referring to.
Apollo maintains the right to express his opinion both on the thematic and on the
requirements of obtaining type rating to the relevant authorities.
The wing consists of the sail and a skeleton structure composed of the following AS
Structures:
1. Sail with fasteners, tuning and stretching elements
1. Wing keel and assemblies
2. Leading edge tubes and assemblies including
Dive sticks and wash out tips
3. Cross tube and cross bar and assemblies
Including wing stretching device
4. A-frame and assemblies
5. King post and assemblies
6. Cabling system including main flying wires,
top rigging and luff lines
7. Struts and assemblies
8. Hang block assembly
9. Battens
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