Engine Mount Rubbers; Fuel Tanks; Checks Following A Heavy Landing - Aeros SkyRanger Operator's Manual

9.12.9 Lexan glazing is sensitive to product in order to remain clear and
streak free. Flylight 'Flies Off' works well. 'Plexus' or 'Plexicoat' have
also been found to be suitable. Warning - Fuel spillage or contact with
Loctite will cause almost instant cracking of Lexan.
9.13

Engine mount rubbers

9.13.1 Engine mount rubbers slowly wear out over time. They should be
changed 'On Condition':
9.13.2 They should be changed if external signs of cracking / perishing are
present.
9.13.3 They should be changed if excessive movement is present. Check this
in the following way:
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.

9.15 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
Skyranger Operators Manual, Issue 3, Feb 2011
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