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If you damage a line:
Any line that is visually damaged MUST be replaced. Lines can be ordered from your local Ozone dealer
or directly from our website www.flyozone.com. Alternatively, use a reputable paragliding service centre
to make the replacement lines.
It is important that replacement lines are made from the correct materials and diameters. You should
check lengths against their counterpart on the other side of the wing to make ensure symmetry. Once the
line has been replaced, inflate and check the glider before flying.
Maintenance Checks
Your wing, like a car, should be technically checked to ensure proper airworthiness. Your wing should
be serviced by a qualified professional for the first time after 24 months, or after 100 hours. However, if
you are a frequent flyer (more than 100 hrs per year), then we recommend you have the wing serviced
annually. The checker should inform you about the condition of your glider and if some parts will need to
be checked or changed before the next normal service check period.
The dimensions of the lines tend to move during the first part of their life, it is therefore recommended to
have a performance trim check after the first 50hrs of use. To ensure the correct trim, the lines should be
measured and adjusted to the published values as necessary. Loops in the C lines are in place to make
this process easier.
During the life of the wing the sail cloth and the lines do not age in the same way or at the same rate, it
is possible that you may have to change part or all of the lines during the wing’s life. For this reason it is
important to do regular inspections so that you know the exact condition of all of the components of your
glider. We recommend that inspections are carried out by a qualified professional.
You alone are responsible for your flying kit and your safety depends on it. Take care of your equipment
and have it regularly inspected. Changes in inflation/groundhandling/flying behaviour indicates the gliders
aging, if you notice any changes you should have the wing checked before flying again. These are the
basic elements of the check up:
Porosity is measured with a porosity meter, the time taken by a certain volume of air to go through a
certain surface of the cloth. The time in seconds is the result. A measurement is done in a several places
on the top surface along the span of the glider behind the leading edge.
The tearing resistance of the cloth - A non-destructive test following the TS-108 standard which
specifies minimum tear strength for sky diving canopies should be made using a Bettsometer. (B.M.A.A.
Approved Patent No. GB 2270768 Clive Betts Sails)
Strength of the lines - An upper, middle and lower A line, along with a lower B and a lower C (and lower
D if applicable) line should be tested for strength. Each line is tested to breaking point and the value
recorded. The minimum value is 14G for all lines calculated from the maximum certified flying weight of
the glider. The added minimum strength for the middle lines and for the top lines should be the same. If
the breaking strength is too close to the minimum value calculated, the professional should give a period
after which you will have to test the strength of the lines again.
Lengths of the lines - The overall length (riser lines + mid lines + upper lines) has to be checked under
5Kgs of tension. The difference between the measured length and the original length should not exceed
+/- 10mm. The changes that could appear are a slight shrink on the C or Ds and/or a slight stretch on the
A, B. The consequences of these changes can include a slower trim speed, difficult inflation etc.
Compliance of the test sample’s suspension lines, brake lines and risers were checked by the testing
laboratory after the test flights were completed.
Risers - Visual inspection for signs of wear or abrasion. Differences to manual lengths should not exceed
+/-5mm.
Canopy check - A full visual check should be carried out: All the components of the wing (stitching, ribs,
diagonals, lines, tabs, ...) should be checked for signs of deterioration.
Finally, a flight test to confirm that the wing behaves normally should be carried out by a professional.
Modifications
Your Ozone Alpina 3 was designed and trimmed to give the optimum balance of performance, handling
and safety. Any modification means the glider loses its certification and will also probably be more difficult
to fly. For these reasons, we strongly recommend that you do not modify your glider in any way.
IMPORTANT
Take care of your
glider and make sure
you have it checked
and serviced according
to the schedule.
Summary of Contents for Alpina 3
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