Diamond DA 40, Flight Manual

Page: 255 / 300

DA 40 AFM
Airplane
Description
Doc. # 6.01.01-E Rev. 8 01-Dec-2010 Page 7 - 29
HRS: This mode shows the remaining flight time (in hours) on the basis of the current
fuel flow. The steps in this indication are tenths of hours. This mode is also only
available if the ADD mode - add up fuel - has previously been activated.
BRN: This mode shows the amount of fuel used (in US gal) since the equipment was
switched on. The steps in this are 0.1 US gal.
ADD: This mode can be used after refueling to bring the fuel quantity, which the
equipment uses for its calculations, up to date. In order to utilize the REM and HRS
modes, the computer needs to be told how much fuel has been taken on. 10 US gal
are added by pressing button 3, while pressing button 5 adds one US gal to the
total. The quantity is confirmed by pressing button 4. In doing this, the quantity which
has been entered in ADD is added to the previous total under REM. To check the
fuel quantity button 4 should be pressed until REM is shown.
If too much has been added, button 4 should not be pressed for confirmation. After
approx. 20 seconds the computer automatically leaves the ADD mode.
CAUTION
Incorrect use of the computer in the fuel-computer mode will
result in false statements in the “REM - remaining fuel” and
the “HRS - remaining flight time” modes. Before using the fuel
computer mode in flight the pilot must be certain that he has
understood the operation and use of the equipment. Beyond
this, use of the fuel computer must not be regarded as a
substitute for fuel planning for a flight.