GDMMTA582-1G
Version 0010
21
Where excessive looseness is found the bushes and attachment points should be checked
for wear and replaced if necessary. In practice this will mean that any pivot point should
not have more than 0.5mm of movement, when load is applied.
Damage
Both the front and rear undercarriage allow for minor damage that does not result in
dimensional changes of the materials (Permanent deformation). Tell tale signs of
permanent deformation include chipped paint around highly stressed areas. Any
permanent deformation warrants full checking of all possible affected parts.
Air Shocks
The life of the shocks should exceed that of the aircraft due to the minimal amount of
travel they will do on the ground, though they still need to be checked regularly for
correct operation. If one of the shocks has lost air then they will sag to a different level
relative to each other on the ground.
Front Shocks
The front shocks are protected from excessive extension by webbing. No adjustment is
possible, so they must be replaced in case of weakness or wear. The webbing and stitches
have to be checked too for wear.
Rear Shocks
The rear air shocks are under very high pressure, they are preset at the factory to 30
bars and require specialized equipment to be repressurized.
If these shocks require service or pressure testing care should be taken to ensure
that the correct equipment is available. Contact an air creation representative if such
equipment is not available, the shock may need to be removed and taken to a
suitable service provider for adjustment or checking.
Check rear shock absorber air pressure. Insufficient pressure will cause the trike
suspension units to sag under load or lean excessively during turns on the ground or in
crosswinds.
Every 25 landings maximum
, check the length of the sliding tubes of the shock
absorber set. The difference (sets at full extension) should not exceed 2 mm. If not, you
should arrange for an overhaul. Moreover the overhaul of the “shock absorber” set has to
be made every
400 take-off or 3 years of use
.
