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NUMBER OF PAGES: 2
APPLICABLE PRODUCTS: All main deployment bags.
DESCRIPTION: Repair of main deployment bag.
AUTHORIZED REPAIRMEN: FAA Senior or Master Parachute Rigger
MATERIALS: E thread
Ty-4 tape or equivalent.
Grommets to match original
MACHINES: 301 Straight Stitch—Medium Duty 7-11 SPI
308 Zigzag—Medium Duty 7-11 SPI
EQUIPMENT:
Scissors
Seam ripper or scalpel
Marking pencil
6" ruler
Grommet set
Hole punch
PROCEDURE
NOTE: The most common repair needed to a main deployment is the repair of the closing flap in the
area of the grommets. The grommets work loose and pull out, damaging the material. The tongue
will need reinforcing and new grommets.
1.0 DISASSEMBLY:
1.1 Remove grommets from the tongue of the bag.
1.2 Unpick the binding along the edge of the grommet reinforcing
tape [Figure A].
2.0 REASSEMBLY:
2.1 Overlay a piece of 1.5" Ty-4 tape on the top of the bag tongue
and sew down [Figure B].
2.2 Punch new holes through the Ty-4 from the back side in the
same location as the original location.
2.3 Overlay the back side of the tongue with a piece of 1.5" Ty-3 tape and sew down [Figure C].
Punch new holes through the tape.
2.4 Sew down the binding tape and rebind as needed [Figure D].
7-91
7-92
2.5 Set new grommets in the
original locations [Figure
E].
3.0 INSPECTION:
3.1 Verify stitching is secure.
3.2 Verify new grommets are
secure.
In the “old days” when military surplus equipment was
common, there were a number of alterations available to
make the surplus equipment suitable for sport use. Since
then, however, the sport has progressed and purpose-built
sport equipment is now the rule, so most equipment does
not need any specialized alterations for use. Most alterations
now deal primarily with harness size adjustments
for individuals, or they are designed to enhance the performance
of the parachute.
In the past, alterations were often done by well-intentioned
individuals who knew how to do them but in most
cases did not have the authority to perform them. The
common attitude was, “I’m a master rigger; I can do anything.”
As long as the work was done reasonably well and
no one got hurt, this was an accepted practice. While there
may be a few individuals who still adhere to that philosophy,
as a whole, the rigging profession is much more
aware of limitations in regard to alterations. Under Title
14 of the Code of Federal Regulations (14 CFR), subsection
65.129(d), “No certificated parachute rigger may –
(d) Alter a parachute in a manner that is not specifically
authorized by the Administrator or the manufacturer.” In
today’s world, manufacturers are much more concerned
with the alterations being performed on their products.
With the advent of the Internet and other means of highspeed
communications, riggers have much more access to
the manufacturer and are more likely to communicate
with them as to what can be done. Also, due to liability
issues, many riggers are reluctant to undertake alterations
without the manufacturer’s approval.
What constitutes the manufacturer’s approval for an alteration?
To be safe, the rigger should always have something
in writing that specifically addresses the alteration
the rigger wishes to perform. There should be a two way
line of communication for this. One, the rigger should
specifically request from the manufacturer the authority
to perform the alteration. This should include serial number,
make, and model of the product involved, and a
description of the alteration. Two, in return, the rigger
should receive, in writing, authorization to perform the
alteration. The manufacturer specifies the form of this
authorization, but it should have the date, the rigger’s
name and certificate number, and a reference to the rigger’s
original request. This fulfills the requirements of the
regulations and protects both parties involved.
In certain cases, a rigger might want to perform an alteration
on a product for which the manufacturer is no longer
in business. This is commonly known as an orphaned
product. If this occurs, the rigger should obtain approval
from the Administrator. Refer to Advisory Circular (AC)
105-2—Sport Parachute Jumping. Alterations to
approved parachutes must be performed only by a certificated
and appropriately rated master parachute rigger, a
parachute manufacturer, or any other manufacturer that
the Administrator considers competent. To receive
　
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