Diamond DA 42 NG, Maintenance Manual

Page: 1051 / 2339

AIRCRAFT
DA 42 NG AMM Fuel
Doc # 7.02.15
Rev. 4
28-40-00
Page 1
15 Mar 2018
Section 28-40
Fuel Indicating
1. General
This Section tells you about the fuel indicating systems of the DA 42 NG. Refer to Section 28-00 for
the general data on the fuel system.
2. Description
Figure 1 shows the main components of the fuel indicating systems. The DA 42 NG has these fuel
system indications which are displayed on the integrated cockpit system (ICS) display.
)
Fuel quantity. Fuel level probes are installed in the inboard and outboard fuel chambers of both the
left and right main fuel tank assemblies.
)
Fuel temperature. Fuel temperature probes are installed on the inboard end of each inboard fuel
chamber.
)
Fuel low-level. Fuel low-level sensors are installed on the inboard end of each inboard fuel
chamber.
The fuel quantity in the auxiliary fuel tanks (optional equipment, OÄM 42-056) is not indicated.
3. Operation
A. Fuel Quantity
As the fuel level in the fuel tanks decreases, the area of the fuel probes which are ‘wetted’ with fuel
also decreases. The amount of ‘wetted’ area of each tank probe is converted into electrical signals
which set the fuel quantity indication which is displayed on the ICS. The fuel quantity indication
shows the amount of fuel in the left fuel tank and the right fuel tank. The display shows the fuel
quantities in US gallons.
Electrical cables connect the fuel probes to the ICS. Refer to Section 31-40 for more data about
the ICS.