Keeping Your Aircraft In Perfect Shape - Pipistrel Sinus 503 Flight And Maintenance Manual

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SINUS motorglider
Handling and maintenance
REV. 0
Tie down
Head the aircraft against the wind and retract flaps fully. Block all three wheels. Remove the caps
covering mounting holes on the bottom part of the wing (located 450 cm from the fuselage) and
carefully screw in the two screw-in rings provided.
Secure tie-down ropes to the wing tie-down rings at an approximately 45-degree angle to the
ground. When using rope of a non-synthetic material, leave sufficient slack to avoid damage to the
aircraft, should the ropes contract. To tie down the tail, tie a rope around the fuselage at the rear and
secure it to the ground. At the end, cover the pitot tube with a protection cover.
Storage
The aircraft is ideally stored in a hangar. For increased in-hangar manouvrability use of original push-
cart is recommended.
Even for over-night storage it is recommended to leave the spoilers' (airbrakes') handle
unlocked - hanging down freely in order to reduce pressure on plate springs and maintain their
original stiffness.
If a parachute rescue system is installed in your aircraft, make sure the activation handle safety pin is
inserted every time you leave the aircraft.
Also, disconnect the battery from the circuit to prevent battery self-discharge (pull battery discon-
nection ring on the instrument panel's switch column) during storage period.
CAUTION!
midity pay special attention to eventual corrosion of metal parts, especially inside the wings.
Under such circumstances it is necessery to replace the spoilers' (airbrakes') connector rod every
2 years.
Cleaning
Use pure water and a soft piece of cloth to clean the aircraft's exterior. If you are unable to remove
certain spots, consider using mild detergents. Afterwards, rinse the entire surface thoroughly.
Lexan glass surfaces are protected by an anti-scratch layer on the outside and an anti-fog coating on
the inside of the cabin. Always use pure water only to clean the glass surfaces, not to damage thiese
protection layers and coatings.
To protect the aircraft's surface (excluding glass surfaces) from the environmental contaminants,
use best affordable car wax.
The interior is to be cleaned with a vacuum cleaner.

Keeping your aircraft in perfect shape

Precautions
1) Eliminate the use of ALL aggressive cleaning solutions and organic solvents, also the window
cleaning spray, benzene, acetone, aggressive shampoos etc.
2) If you must use an organic solvent (acetone) on small areas remove certain glue leftovers or simi-
lar, the surface in question MUST be polished thereafter. The only section where polishing should be
avoided is the edge on the wing where the sealing gasket is applied.
Should the aircraft be stored and/or operated in areas with high atmospheric hu-
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