AIRCRAFT MAINTENANCE MANUAL
DFE-AMM-AR1
Rev. 1 – 07/24/2014
5-1
Section 5 – FUEL SYSTEM
5.1.
GENERAL
This Section identifies the line maintenance, minor repair, and minor alteration tasks that can be
accomplished in the aircraft fuel system by the Aircraft owner (only for ELSA), a Sport Pilot or higher or a
holder of an LSA repairman certificate with either an inspection or maintenance rating.
No heavy maintenance, major repairs, or major alterations, as outlined in ASTM F2483 Sections 7
through 9, are authorized at this time, for this ALTO aircraft fuel system.
Any heavy maintenance, major repairs, or major alterations, as outlined in ASTM F2483 Sections 7
through 9, can only be performed by Direct Fly S.R.O. or only as provided by Direct Fly‘s’ approved
engineering data.
5.1.1. Description
Each wing contains an integral fuel tank with a capacity of approximately 46 liters (12.1 U.S. gallons)
volume. Each tank is fitted with an air vent (output is under the wing) and a drain valve on the bottom side of
the wing. Fuel flow from the tanks through the hoses to the fuel selector located on a central console under
the instrument panel and then through a fuel filter to the electric and mechanical fuel pump then to the
carburetors. The fuel return hose goes from the mechanical fuel pump into the right tank, which is considered
as a “primary” tank. See figure below with the Scheme of fuel system.
The fuel tanks filler necks are placed on the upper side of the each wing. Fuel quantity is displayed
by the engine monitoring system on the instrument panel.
Figure 5-1 – Wing Tank
