Flylight Airsports Skyranger Swift, Operator'S Manual

Page: 38 / 56

Skyranger Swift Operators Manual (issue 3)
38
Remove the engine bonnet
Grasp the propeller near the hub
Lift up and down, side to side, and diagonally.
Observe the rubbers and movement relative to the mounting
structure. Movement confined to rubber flexing is fine. Clear
movement of the whole rubber parts relative to the hole in the
mounting structure indicates that the rubber should be replaced.
9.14 Fuel tanks
9.14.1 The fuel tanks are clear polyethylene. Taking off the tank caps results
in the ability to look directly inside. Any dirt / water or other
contamination is easy to see. Using the drain valve will remove most
of this, but inevitably some is left in the corners and over the front of
the ‘saddle’ of the tanks.
9.14.2 A useful technique to clean these areas is to make up a siphon tube
using a length of small diameter aluminium tube connected to a
length of flexible pipe. This can be directed and used as a very
effective ‘Hoover’ to clean all small remaining particles.
9.14.2 The fuel tanks will yellow over time and should be changed on
condition. The rubber type fuel tank fittings may degrade over time,
and we recommend that those submerged in fuel are changed every
five years.
9.15 Checks following a heavy landing
9.15.1 Main Undercarriage - The main gear legs will splay outwards if
overloaded. Usually a heavy landing will be slightly wing down and
one leg will distort more than the other. So initially observe from the
front and check for symmetry. Check also the angle of the wheel to
the vertical. When new the wheel angle unloaded will be vertical or
very slightly ‘towed in’ at the bottom. A wheel sitting splayed
outwards at the bottom indicates the gear leg (or axle) has been bent,
and is no longer serviceable. If landed heavily with brakes on, or on a
rough surface, significant drag loads may be applied. Check for play
in the connections of the steel drag brace to the main gear leg and
where it attaches to SKR.15. Lock the brakes on and rock the aircraft
backwards and forwards to assess this. Check also the main cross
beam SKR.9 for straightness.