Pilot Induced Oscillations
It is common for new pilots to experience Pilot-Induced Oscillations, usually in the pitch axis. The PIO can happen in any phase of flight, but the most dangerous is in the final moments of flight, or during the ground roll-out. The instructor will discuss strategies with the student on minimizing the probability of having a high-energy landing turn into a PIO that can damage the tail boom.
The candidate must be able to consistently land the glider at minimum energy (with spoilers deployed). For the ASK-21 and Grob 103 trainers, our club instructors emphasize the two point landing technique: tail wheel and main wheel landing simultaneously. The "fly-it-on" landing strategy is highly discouraged for these gliders, although note that it is appropriate for this technique when landing Schweizer gliders.
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