DG Flugzeugbau GmbH
Flight manual DG-500M
37) ff
On the ground prior to take off extend the engine via the manual switch No.
24. The automatic extension-retraction system will only be activated if the
change over switch 36 was in "on" position before the ignition was
switched "on" or "off".
This peculiarity prevents the possibility that by switching No.36 on or off
the engine will be extended or retracted inadvertently. Caution: For
passenger flying etc. it is necessary to secure the ignition switch in the rear
cockpit with the securing plate. The securing plate is equiped with a quarter
turn lock which must be operated with a screw driver. For storage you may
install the securing plate turned downwards 180 °.
38) Control light ignition on green flashing light shines with both ignition
switches "on". The light stops shining as soon as the engine RPM exceeds
1200 RPM.
39) Test switch for the two ignition circuits
test
Switch in the middle
I+II
both ignition circuits activated
Switch to the left
I
No. I ignition circuit activated
Switch to the right
II
No II ignition circuit activated
The switch is spring loaded such that it will always return to the middle
position (I + II).
40) Control light
engine travelling
: yellow flashing light shines as long as the
engine is not in the extended or retracted position.
Note: As long as the control light is flashing you can't display the outside
airtemperature (option) or the daily elapsed time indication on the DEI in
the rear cockpit.
41) Control light
Prop. L
: red permanent light shines as long as the propeller
is not in the correct position for retraction.
This light is coupled with the control of the engine retraction relais. Should
the propeller move out of the allowable position during retraction the light
will start shining and retraction is stopped automatically.
In such case you have to extend the engine again (by switching on the
ignition) and to align the propeller again.
In an emergency it is possible to retract the engine with the propeller not
aligned or even turning via the manual switch (see emergency procedures).
Issued: April 1997 7.10
To Next Page
Loading...