Paraglider Identification
Once we receive the paraglider from the customer or flying school, a visual inspection is made to identify the glider based on the official manufacturer documentation and the type datasheet.

Test fabric porosity - Measurement of the air permeability of the fabric
Good fabric porosity levels are required for your wing to keep the internal pressure high enough to maintain average resistance to collapse and parochial tendencies. We use POROZIT N from Hello Ltd and take measurements in 3 places on the top surface, 10 – 20cm from the leading edge. If readings are low or inconsistent, further readings are taken.

Evaluation of measurements
• Excellent – Good > 200 sec
• Medium – 70–200 sec
• Weak – 25–70 sec
• Inappropriate < 18 sec

Safe Gliders suggested service intervals based on the porosity reading*:
• 150 + seconds - 1 year or 100 hours
• 110 to 150 seconds - 9 months or 80 hours
• 70 to 110 seconds - 6 months or 60 hours
• 25 to 70 seconds - 3 months or 40 hours
• 18 to 25 seconds - 1 month or 20 hours

Technical specifications
• Average measurement vacuum – 10 mbar
• Surface of airflow – 38.50 cm2
• Measured volume of air – 250 cm3
• Measurement error – ± 3%
• Relative air humidity: max. – 60%
• The measurements from the temperature range: +15 º C – +25 º

General inspection of the lines
The main, upper, and brake lines are checked for tears, kinks, shear points, sheathing damage, and heavy wear. Particular attention is paid to the integrity of the stitching and handshake points.

Measure the length of all lines by laser
We use a laser measuring device on a rail system with a 5KG load and software to get highly accurate, consistent measurements and check actual line lengths against the specification.
Paragliders gradually lose trim, which can go unnoticed without measurement. Lines change in length over time, especially when exposed to dampness, dust, water, sand and heat. Depending on the levels of trim variance from the manufacturers’ specifications, it can make a glider fly slowly, lose altitude, herder to launch, and increase the likelihood of collapses, spin or stall. Restoring trim levels to the specifications can significantly improve the glider's flight characteristics.
Corrections are made by taking various loops at the maillon or in the upper cascade handshake knots to shorten individual lines and bring the glider back into trim. It is improving the glider's flight characteristics as when it was new.

Assess line strength
The number of tests depends on the age and condition of the wing and the line material. Main and mid-centre A/C lines are checked; further lines will be checked if the results are poor or the lines are old and worn out. Our technicians have the experience to know what tests are required based on the test results.
European standard EN 926-1 requires the line set to carry 14 times the maximum flying weight.

Test of the tear strength of the sailcloth
The canopy strength test is performed with the Bettsometer. In this test, a pin-size hole is made in the upper surface of the leading edge, and the tear strength of the fabric is tested in both vertical and horizontal directions with 600 grams of force.

Full canopy inspection
We closely inspect the canopy to find damages at attachment points, seams, ribs, edges, and internal and external fabrics. The upper and lower surfaces, leading edge and ribs (incl. any v-ribs that may be present), seams and flares are checked for tears, shear points, stretching, coating damage, repair points and other visually noticeable problems.

Testing and securing of connecting elements
All line maillons, trimmers and speed systems are checked for visually noticeable problems such as tears, wear points and stiffness. Opened or inadequately secured connecting elements are secured against unintentional opening.

Assessment of the risers
We closely inspect riser trim tolerance, stitching, rings, pulleys, links, and O-rings for any damages and repair them for you. Our technicians will call you with the options available for anything more significant.

Preparation of the service, test and repair reports
All repair work on the paraglider is documented in full in the service or test report. The overall condition of the paraglider is rated before delivery, and the testing or service documented is completed with a date, examiner, and expiration date of the test.


*These are indicative timelines. Porosity of a glider fabric is highly dependent on environmental, folding and storage conditions. The pilot will be fully responsible for checking the canopy based on these conditions.

Fly safe, glide happy!