Flight At High Altitude And At Low Temperatures - DG Flugzeugbau DG-1000 Flight Manual

4.5.8

Flight at high altitude and at low temperatures

With temperatures below 0°C (32°F) for instance when wave flying or flying in
winter, it is possible that the control circuits could become stiffer. Special care
should be taken to ensure that there is no moisture on any section of the control
circuits to minimize the possibility of freeze up. It could be advantageous to
apply Vaseline along all the edges of the airbrake cover plates to minimize the
possibility of freezing closed.
Operate the controls regularly to prevent ice build-up.
It is not allowed to carry waterballast.
Caution:
1. At temperatures below -20°C (-4°F) there is the risk of cracking the
gelcoat.
2. Attention must be paid to the fact that at higher altitudes the true airspeed
is greater than the indicated airspeed.
The max. speed V
Altitude in [m]
V indicated km/h
NE
Altitude in [ft]
V indicated kts.
NE
3. Dump the water ballast before you reach freezing altitude or descend to
lower altitudes.
4. Do not fly below 0°C (32°F) when your glider is wet (e.g. after rain).
Issued: July 2005
Flight manual DG-1000T
is reduced. See the following table:
NE
0-3000 4000 5000 6000 7000 8000
270 256
0-10000 13000 16000 20000 23000 26000
146 138
243 230 217
131 124 117
205
111
EASA app.
4.20