Schempp-Hirth Flugzeugbau Ventus–3T Sport Flight Manual page 119

SCHEMPP-HIRTH FLUGZEUGBAU GmbH, KIRCHHEIM/TECK
Ventus-3T „Sport"
6.2.1 Seat load of less than the required minimum
There are two ways to compensate a seat load of less than the required minimum:
o Ballast by means of lead or sand cushion
The ballast (lead or sand cushion) must be attached firmly to the lap belt
mounting brackets. The ballast is added to the seat load.
o Ballast by means of lead plates (option)
A trim ballast mounting provision is provided in the fuselage nose forward of the
rudder pedal assembly.
The ballast mounting provision holds up to three (3) lead plates with a weight of
2.2 kg (5.0 lb) each and allows a reduction of the minimum seat load indicated
in the cockpit placard as shown in the following table:
Lever arm of trim ballast plates: 1800 mm (70.86 in.) ahead of datum plane
Important note:
Be aware that, even when using trim plates, it is not allowed to fall below the
minimum flight mass (see page 2.6).
It is only allowed to use so many plates, that the absolute value of the
difference to the minimum on the placard (shown above), added to the real
mass in the seat, does not exceed 105kg (231 lb).
April 2018
Revision –
Number of lead plates
1
2
3
Difference to the minimum
on the placard:
- 5 kg, - 11 lb
- 10 kg, - 22 lb
- 15 kg, - 33 lb
FLIGHT MANUAL
6.2.1.1