MAINTENANCE MANUAL
SAVANNAH S
Doc. No.:
MM-SVNH-EN
Revision:
07
Rev. Date:
07/11/2022
Proj. Ref.:
SVNH S
A/C:
Savannah S
Applies to Generic Serial Number:
yy-mm-54-xxxx
Page:
14/132
DOC
FMM00
1.9. Aircraft protection and anchoring
Savannah S
TM
is an ultra-light metal aircraft almost completely manufactured in Aluminium alloy AL
6061 T6. This AL alloy shows good corrosion resistance features, some simple cleaning operations
are nevertheless required. Backwater should be avoided by through drying after water cleaning.
Furthermore, high pressure water jets should be avoided in order to prevent any infiltrations in points
not easy to inspect or not allowing fast water evaporation.
The original finishing shall remain integer for a long time if the aircraft is periodically washed with a
wet sponge and/or car detergent. Always rinse thoroughly and periodically treat with good quality
nonabrasive wax. If the aircraft is kept in a salty environment, it must be frequently washed with
freshwater and waxed.
Windshield and windows are made of Lexan material, the cleaning should be accomplished with
polycarbonate dedicated products. Lexan in contact with solvent, petrol or any other products with
even a minimum percentage of alcohol should be avoided and could probably damage immediately
or in a short time the part.
The aircraft is not water-proof, rain and humidity can enter from the roof and especially parachute
bridles passage (if installed). In case of in-flight rain, maintain Visual Meteorological Condition and
possibly perform a route going out of shower.
To protect the aircraft, mainly from rain entering in the cabin, cover the wing and fuselage with a thin
water repellent sheet, paying attention to not damage the vortex generators. Before flight open the
door and/or fuselage trap door to eventually dry the water or humidity.
To secure the aircraft in case of outside parking, apply the following procedure:
-
set parking brakes on;
-
alternatively, set minimum two wheels chokes on nose (or tail) wheel;
-
lock the control stick with the safety belt, fully backward;
-
in case of strong wind forecast or turbulence, anchor the aircraft with tie down kit, connected
below the wing strut area, to dedicated attachments;
-
if required, additionally anchor to ground the tail from the tail skid and the propeller spacer
(not damaging the blades, the spinner, the engine cowling).
The aircraft can be protected also by snow, with the same method above, but a thickness major than
10 [cm] is not allowed and can damage the structure. Remove entirely the snow, remove the cover
and let the structure eventually dry before flight or work on the aircraft.
The best practice of course is protect the aircraft inside of a hangar.
1.10. Aircraft cleaning
The cleaning of the aircraft can be executed with a wet sponge or microfiber cloth or leather and not
with an aggressive/corrosive detergent. The front shield and windows are made of Lexan and the
cleaning must be accomplished with polycarbonate dedicated products, not corrosive, without any
solvent or alcohol. The contact with fuel and oil can damage instantly this material.
