SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK
Ventus-3M „Performance“
FLIGHT MANUAL
March 2019
Revision –
7.3.11
I. Power plant operating unit MCU3 BG
(cont.)
A) Device description
(cont.)
4. Manual operation switch (switch for spindle drive)
a)
If the pilot starts the extension or retraction process during flight with the ignition
switch, there is no need to use the manual operation switch as long as there is no
failure in the power plant control system.
b)
The manual control switch (toggle switch) has three positions:
Position UP
-
Automatic operation turned off
-
Extraction of the power plant as long as the switch is
held
-
Spindle drive stops by itself when the power plant is
fully extended and the limit switch is reached.
Position middle
-
Automatic mode (default position)
Position DOWN
-
Automatic operation turned off
-
Retraction of the power plant as long as the switch is
held
-
Spindle drive stops by itself when the power plant is
fully retracted and the limit switch is reached.
c)
The manual control switch can be used to extend and retract the power plant in the
following cases:
i)
on the ground (recommended for pre-flight inspection and maintenance).
ii)
when in flight the automatic operation of the power plant control system for
extension and retraction is switched off automatically. This occurs when
there is missing or unclear information about the position or operating status
of the power plant. The power plant control system then switches to manual
mode (display:
) and the pilot must take over further control of the
extension or retraction process.
iii)
if the pilot wants to take over control of the automatic retraction and
extension process from the power plant control system.
Caution:
The power plant can only be retracted with the manual operation switch if the ignition is
OFF.
Содержание Ventus-3M Performance
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