I have problems with the climb rate of the Beechcraft Ducess 76. The Ducess doesn't climb at all at 80 knots. It only climbs when it is accelerated to 90 knots, better 100 knots.
This is a problem at the departure in Birrfeld, Swiss (LSZF). After taking off, you have to keep the nose down to accelerate to 100kn and then climb with at a good rate (1500ft/min). However, the hilly terrain around airfield Birrfeld does not allow this.
The runway (727m/2385ft) seems to be too short for the Ducess. The Ducess takes off at the end of the runway.
Is this behaviour real? Is the Birrfeld runway really too short for the Ducess? Does the Ducess needs a flat terrain after the runway?