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Please read the readme.txt included in the ZIP
The Schleicher K7 Rhönadler, aka Ka-7 or K-7, is a West German high-wing, two-seat, glider that was designed by Rudolf Kaiser and produced by lt Alexander Schleicher GmbH & Co.
Often referred to as the Ka-7 or K-7, the US Federal Aviation Administration lt type certificate officially designates it as the K7.
Some content in menu 2.
Weight (ready to fly): 1300g - 1400g
Electric motor: Boost 30
Radio req: 4 channels / 4-5 servos