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familiar with, then the rigger should contact the manufacturer
for further direction and guidance. The rigger should
also remember that each procedure is just one method of
accomplishing a given repair. There might be more than
one or an individual might develop a different technique
to achieve the same results.
No matter what techniques or procedures that are followed,
remember that there are three basic requirements
to follow for any proper repair procedure.
1. The first is the knowledge to do the job. This includes
the required certification and authorization.
2. The second is the proper equipment, such as sewing
machines or hand tools.
7-1
7-2
3. Third is the availability of the proper materials.
The individual may be a master rigger with a complete
parachute loft at his/her disposal, but without the materials
as used in the original manufacture, the correct repair
cannot be made. By following these simple guidelines,
riggers are always able to determine whether or not they
can do the job properly.
Most of today’s manufacturers provide guidance for the
repair and maintenance of their products. These instructions
are the official guidelines that the rigger must follow.
The four primary areas of parachute repair and maintenance
are: canopy and lines; container; harness and risers;
and accessory components. These areas are
summarized within the seven sections of this chapter as
follows:
Section 1. Canopy and lines.........................................7-3
Section 2. Container...................................................7-39
Section 3. Harness and Risers....................................7-57
Section 4. Accessory Components.............................7-79
Section 5. Alterations.................................................7-93
Section 6. Manufacturing.........................................7-103
Section 7. Miscellaneous .........................................7-115
7-3
There are two general categories of canopies: round and
square. While there are other canopy types, their construction
and repair techniques generally follow those
of the round and square canopies. Figure 7-1 shows a
round canopy repair table, created from current military
manuals, and describes the types and limits of canopy
repairs, most of which pertain to military or surplus
canopies. It must be mentioned that all of the services
differ in their approach to methods of repair. Those called
out in this book are methods that have been proven to be
practical and efficient and commonly accepted throughout
the parachute industry. The techniques are similar
with only minor differences in seam dimensions and tolerances.
While these limits are practical from the technical
point of view, the economic cost may not be in many
cases.
Limit: 1 per line. 8 per canopy.
ROUND CANOPY REPAIRS AND LIMITATIONS
Type
Limits
Certificated Non-certificated
Restitching No limit as to length and number. No limit as to length and number.
Holes or tears not exceeding .5" and
snags. Limit: 3 per panel,
10 per canopy.
Ripstop tape No limit as to size or number.
Basic patch Size limit: 50% of panel. Limit: 3
per panel, 15 per canopy.
No limit as to size or number.
Panel patch Limit: 9 per canopy. No limit.
Radial seams Size limit: 12". No more than
4 per canopy.
No limit as to size or number.
Lateral bands
Upper
Damage size limit: 2".
Limit: 1 per canopy.
No limit as to size or number.
Lower Damage size limit: 36".
Limit: 4 per canopy.
No limit as to size or number.
V-tabs No limit. No limit.
Pocket bands No limit. No limit.
Vent collar ring No limit. No limit.
Vent collars No limit. No limit.
Suspension lines
Continuous line No limit. No limit.
Noncontinuous
line
No limit. No limit.
Line splice Not allowed.
Figure 7-1.Table of round canopy repairs and limitations.
7-4
7.1 The following are the repairs found in Section 1 of
this chapter.
7.1.1 Seam restitching
7.1.2 Canopy ripstop tape repair
7.1.3 Round and square canopy—Basic patch
7.1.4 Round canopy—Panel replacement
7.1.5 Square canopy—Partial panel replacement
7.1.6 Square canopy—Rib repair
7.1.7 Square canopy—Pilot chute attachment
point repair
7.1.8 Round canopy—Noncontinuous line
replacement
7.1.9 Square canopy—Main line replacement
7.1.10 Square canopy—Line splice
7.1.11 Square canopy—Control line replacement
　
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