Alexander Schleicher AS 33 ES Technical specifications

Flight Manual Flight Manual
Issue: 01.11.2020 TMÖ
Revision: TM 3 28.04.21 TMÖ
4.6
To de-rig: proceed in the reverse order of rigging starting with the hori-
zontal tail, winglets, wing tips and inner wings. We would add the follow-
ing suggestions:
1. Drain all water ballast. To properly do so screw off the cover from
the wing water tank on the upper wing surface and open the valves.
Ensure that all the water has emptied out by putting down alternative
wing tips several times. Despite technical provisions, the wing sur-
faces might suffer from humidity on the long run.
At the wing root there is a drain hole in front of the forward lift pin
bushing. Ensure these holes are open, when wings are put in the
trailer, so that remaining water can spill out. The same applies for
the valves and the openings at the upper wing surface.
2. If a tail water ballast tank is installed, check if water has gathered in
front of the rudder or inside the fuselage tail cone. If water is found,
check all hose clamps, hoses and valve for leaks.
3. If the tailplane is very firmly located in its rear seating, it will be more
easily dismantled by pushing it forwards by the tips.
4. If a battery box according to TN 3 is installed in the baggage com-
partment, then the battery has to be removed before de-rigging the
aircraft. When necessary, also the platform for the clamping lever
can be removed.

Flight Manual Flight Manual
Issue: 01.11.2020 TMÖ
Revision: TM 3 28.04.21 TMÖ
7.16
Additionally there are two more batteries available as an option:
•Avionic-Battery 2
This battery is installed in a special compartment in the right side
of the upper baggage compartment. It supplies the electronic in-
struments. Electrical protection is provided by a 10A fuse is in-
stalled directly at the battery.
The battery is in-
serted into a specially
made deepening of
the baggage com-
partment bottom.
The securing is done
by a clamping lever
which swivels above
the battery when it’s
inserted. An inte-
grated detent mecha-
nism prevents unin-
tended twisting of the
lever.
•Avionic-Battery 3
This battery can be installed in a special compartment at the up-
per end of the vertical tail. It can also supply the electrical instru-
ments. For electrical protection a 10A fuse has to be installed di-
rectly at the battery.
The battery must perfectly fit to the compartment. If necessary,
additional foam must be used to prevent the battery from shifting.
NOTE
For flights with the engine removed the avionic-battery 2 be-
comes standard. The avionic battery 1 and 3 are still available
optionally. When they are used note their effect on the centre of
gravity (see section 6.3)!
For charging, the batteries must be removed from the fuselage. Alterna-
tively the charging can be also performed by using the optional charging
sockets. Depending on the custom design this socket is installed in the
instrument panel and / or on to the right root rib of the fuselage. Details
on the electrical connection are shown in the maintenance manual.