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“Cravat” / Line-over:
In the event of some lines becoming tangled during flight (caused by whatever), the
following action is recommended:
The pilot stabilizes the glider by gently applying the brakes. Please be aware that in this
condition the brake pressure can be higher and the brake travel shorter.
Without pilot input a line-over will result in a stable spiral dive.
Here are the various options to untangle a line-over:
- pumping the collapsed side.
- pulling the stabilizer line or lines causing the problem.
- should both measures fail, it may be possible to untangle the line-over by inducing a
full stall. This manoeuvre, however, should only be carried out by advanced pilots with
experience in extreme flight situations and with sufficient altitude available.
Attention! If these manoeuvres fail or if in any doubt, the pilot should instantly use their
emergency parachute system.
Front Tuck:
A front tuck can be induced by strongly pulling the A-risers or by sudden, heavy
turbulence. The entire leading edge spontaneously collapses. Gentle braking on both
sides will reduce the lateral pendulum motions and simultaneously accelerate re-
inflation. The Yukon generally self recovers from an initiated front tuck.
When having a very large front tuck, a frontal rosette can happen (the wingtips move
forwards: shaping a horseshoe). Gentle braking can avoid this deformation.
A quick recognition of the situation and a quick reaction by braking on both sides as
long as the collapsed wing is behind the pilot helps the recovery and limits the altitude
loss.
Parachutal stall (deep stall):
In a parachutal stall the paraglider has no forward momentum combined with a high
descent rate. A parachutal stall can be caused by, among other reasons, a too slow exit
from a B-line stall or severe turbulence. Porous canopies (UV influence) or canopies out
of trim (stretched or shrunken lines) are much more susceptible to a parachutal stall and
therefore should not be flown. These are some of the reasons regular checks should be
carried out on your glider.
A wet canopy or temperatures below zero centigrade (0°C) may also cause a stable
parachutal stall. The Yukon will usually spontaneously recover from a parachutal stall
within 2-3 seconds. If the canopy remains in a parachutal stall, it is sufficient to gently
push both A risers forward or to push the accelerator.
Attention! If brakes are applied while in a parachutal stall, the glider may suddenly enter
a full stall!
If a parachutal stall occurs on landing approach, the pilot should prepare for a hard
landing and make a parachute roll landing. In close proximity to the ground, due to the
forward surging pendulum effect, a recovery may be more dangerous than a hard
landing in parachutal stall
.
Summary of Contents for Yukon
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Page 23: ...23 LINE PLAN YUKON ...
Page 26: ...26 CHECKS Name Company Date Signature Stamp ...
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