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MANUAL FOR PARAGLIDER CHECKS
Check-intervals
A new MAC PARA paraglider must be given a check every 24 months. With intensive
use (> 100 flying hours per year, or excessively demanding use) an annual check is
needed, after the first check.
Personnel authorized to carry out checks
A valid flying license and training course by National association are the basis for
permission to carry out paraglider checks
Identification of glider
An identity sticker with details of certification and serial number is attached to the glider.
Components of the check
Porosity
The porosity should be checked with a porosity meter (JDC). Compare the resultant
data with the producer's manual. Porosity measures should be taken on at least three
points of both the top and bottom surface. The first point should be placed 20-30 cm
from leading edge in the middle of canopy. Second and third points are placed left and
right from first measure point at 25% of the span. One additional measurement should
be made on the top surface of the wing tip.
The identified time should be higher than 30 second (JDC). In the event of the result
being less than 30 seconds, the result of the check is a fail.
Overall strength check
The check of canopy strength should be made with a Bettsometer (B.M.A.A approved
Patent No. GB 2270768 Clive Betts Sales). On the top and bottom surfaces make small
holes with a needle at the Aline attachment points. The exact verification should be
made in accordance with the Bettsometer user manual.
Line strength check
Line strengths should be as specified in accordance with the certification requirements.
One main line should be taken from each array and have its strength checked with a
tension-meter.
Required strengths should be higher than:
A + B main lines x measured value > 8 x maximum take-off weight and higher
then 800 kg for the A + B arrays.
C + D mean lines x measured value > 6 x maximum take-off weight and higher
then 600 kg for the A + B arrays.
Replacements for damaged lines must be with new original lines. Line lengths are taken
from the lines data page.
