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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 line should be
tested for strength. Each line is tested to breaking point and the value recorded. The minimum
value is 14 G for all A+B 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 /- 10mm. 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.
