SIGMA TANDEM SYSTEM OWNER’S MANUAL
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Section 3: Instructor Techniques • Chapter 1 - Preparation 11301 - 00.00.0000
B) Video and assumption of risk agreement:
The student must view the waiver video and sign the waiver. Be careful to abide by all Relative Workshop & USPA
provisions in the exemption, such as student’s age, etc... If the video machine is out-of-order or the tape is lost, it is the
same as if the aircraft is inoperative. NO ONE may make a Tandem jump without seeing the waiver video and signing
the waiver.
STUDENT HARNESS ADJUSTMENT GUIDE
The Sigma / Vector Student Harness is quite a departure from previous tandem student harnesses. It was designed,
with the help of a cardiologist, to safely contain the human body without cutting off normal blood flow. Disrupted
blood flow is why almost all students on older student harnesses were uncomfortable, and why many got sick or even
passed out.
A hip-hugging horizontal back and belt strap combination allows the main lift webs to be positioned, and held, more
toward the front of the upper body than on other designs. This prevents the “squeezing” of the upper body and the
inside of the upper legs which can cut off blood flow. It also automatically lifts the legs up and forward after opening,
putting them in a safer position for landing.
The Student Harness was designed to comfortably and safely fit a wide range of body sizes. To accomplish this, it has
twelve points of adjustment. This wide range of adjustment means that it is possible to give a tandem student a truly
comfortable experience on their tandem skydive. However, the harness must still be adjusted securely to fit the
student’s body to prevent them from falling out in extreme situations and unusual body positions.
While fitting this harness on a tandem student is not difficult, it is different from other harnesses you may used in the
past. The most important point to consider is the security of the student. You must insure that all straps are comfortably
snug against the student’s body.
Please use the following guide to keep your students safe and comfortable.
HARNESS ADJUSTMENT
Loosen the harness before donning.
Rotate the harness on the student’s
shoulders so the Top Attachment Snaps will
be easy to hook up.
Adjust the chest strap loosely.
Adjust the Belt Strap so the main lift webs
are positioned as shown. The Horizontal Back
and Belt Straps should be tightened firmly
around the hips.
Adjust the Main Lift Webs and Diagonals so
the harness’s Hip Junctions are resting
squarely on the student’ hips.
Tighten the Leg Straps.
Slide the Chest Strap vertically into the
correct position and tighten.
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