Maintenance Manual FK 9
B&F Technik Vertriebs GmbH
Revision 2
Section 3 Structures
page 10
document code: des.003
3.6.9.
Trim System
Aileron & Rudder Trim:
Ground-adjustable trim tabs are mounted on both ailerons and on the rudder.
Elevator Trim:
The elevator has an in-flight, adjustable spring trim. The spring trim determines the neutral position of the elevator by
springs whose tension can be adjusted by a control lever on the middle console. The neutral position is marked in green,
moving the lever forward the aircraft will be trimmed nose down and by moving the lever back the aircraft will be trimmed
nose up.
3.7.
Control Surface Deflection
for control surface deflection values and tolerances refer to POH
3.8.
Jacking / Towing / Storage
3.8.1. Jacking
█ CAUTION:
As a general rule, apply force to aircraft structure only on main structural elements such as frames, ribs or
spars.
Use following points for jacking:
1. lower engine mount where connected to the fuselage or engine mount junctions (hanging up)
2. main gear beam where connected to the fuselage
3. nose/tail wheel where connected to the fuselage
For towing (forward only), connect the rope to the main gear.
To stow the dismantled wings, use storage tools with a minimum contact area of 150mm. The leading edge should have
no contact to the storage tool in the first 20mm.
For long distance transport in truck, trailer or container the following dismantling and storage procedure is
recommended:
Dismantle airframe including wings, tailplane.
Secure controls
Dismount wheel fairings to avoid damages
Dismantle propeller
Disconnect electric circuits, dismantle fuses and battery
De-install shock-sensitive avionics (radio/transponder/glass panels) and pack in upholstered boxes
Additional for road transport in trailer or truck:
Remove liquids (oil system/cooling system)
Additional for air transport:
Remove complete engine (considered as hazardous good for airfreight!)
Reassembling the aircraft for operation:
Proceed according to assembly checklist.