SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK
Arcus M
FLIGHT MANUAL
4.5.6
Flight with water ballast
Water ballast is required for reaching the maximum permitted all-up mass.
Wing ballast tanks
The water tanks are integral compartments in the nose section of the main
wing panels.
The tanks are to be filled with plain water only, through round openings in
the upper wing surface featuring a strainer.
Tank openings are closed with plugged-in filler caps having a 6 mm
(0.24 in.) female thread for lifting and venting. Lifting these caps is done with
the aid of the tailplane rigging tool.
WARNING:
As the threaded hole in the filler cap also serves for venting
the tank, it must always be kept open!
Never place tape over the hole.
Each wing tank has a capacity of approx. 92 Litres
(24.30 US Gal., 20.24 IMP Gal.).
Dumping the water from full tanks takes approx. 3.5 minutes.
When filling the tanks it must be ensured that the maximum permitted all-up
mass is not exceeded - see page 6.2.5.
October 2011
Revision --
appr. 4.5.6.1