Para-Cushion - Strong Enterprises

Para-Cushion - Strong Enterprises
US Patent 3,908,937
Owner’s Manual
For packing and maintenance of
Para-Cushion
Model 305 Chair
Part number: 124255
with
26ft. Mid-Lite Canopy
Part number: 420550
Manual P/N 510088
Price $25.00
Revision E:
August 2013
! WARNING !
Parachuting is a hazardous activity that can result in serious injury or
death. Failure to follow all warnings, instructions and required procedures
may result in serious injury or death. Parachutes sometimes malfunction,
even when they are properly designed, built, assembled, packed, maintained
and used. The results of such malfunctions are sometimes serious injury
or death. There are so many factors, both human and natural, beyond our
control that we want you to clearly understand that by using or intending
to use our parachutes, you are assuming a considerable risk of personal
injury or death. If you are not willing to assume that risk, please return the
parachute to the dealer where it was purchased for a full refund.
DISCLAIMER
There are NO WARRANTIES which extend beyond the description of the
parachutes in this manual and neither the seller nor any agent of the seller
has made any affirmation of fact or promise with respect to the parachutes
except those that appear therein.
The liability of the seller is limited to the duty to replace defective parts
found upon examination by the manufacturer to be defective in material
or workmanship within 7 days after purchase and found not to have been
caused by any accident, improper use, alteration, tampering, abuse or lack
of care on the part of the purchaser.
Strong Enterprises owner’s manual. Para-Cushion model 305 Chair
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Table of Contents
Warning/Disclaimer
Table of Contents
1. Introduction
4
2. 305 Chair Model Description
9
1.1. Scope .................................................................................................................................................4
1.2. FAA Approval....................................................................................................................................4
1.3. Operational Limitations...................................................................................................................4
1.4. Repack Interval.................................................................................................................................4
1.5. Model Description.............................................................................................................................4
1.6. System Function...............................................................................................................................4
1.7. Care of your 305 Chair Parachute System.....................................................................................5
1.8 Service Life.......................................................................................................................................5
1.9. Preflight Inspection..........................................................................................................................5
1.10. Fitting the Parachute Harness......................................................................................................6
1.11. Plan ahead......................................................................................................................................6
1.12. How to get out of the aircraft.........................................................................................................7
1.13. How to open your Parachute..........................................................................................................7
1.14. How to Steer....................................................................................................................................7
1.15. Landing and Recovery������������������������������������������������������������������������������������������������������������������� 7
1.16. Reporting of Equipment Improvement Recommendations..........................................................8
2.1 Parts List .........................................................................................................................................10
3.
4.
5.
6.
Required Packing Tools
Prepare Parachute for Packing
Pre-Packing Inspection
Packing the 305 Chair Model 11
12
12
13
7. Repair Guidelines
8. Changing the Pilot Chute Loop and Cap
9. Installing the Toggles
26
27
29
6.1 Folding the Parachute�������������������������������������������������������������������������������������������������������������������� 13
6.2 Securing the Diaper������������������������������������������������������������������������������������������������������������������������ 15
6.3 Risers Placement����������������������������������������������������������������������������������������������������������������������������� 17
6.4 First Line Stow�������������������������������������������������������������������������������������������������������������������������������� 17
6.5 Excess Line Stows��������������������������������������������������������������������������������������������������������������������������� 18
6.6 Remaining Line Stows�������������������������������������������������������������������������������������������������������������������� 19
6.7 Placing Canopy Into Container������������������������������������������������������������������������������������������������������ 21
6.8 Closing the Container��������������������������������������������������������������������������������������������������������������������� 22
FAA Approval Letter (Inside Back Cover)
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Strong Enterprises owner’s manual. Para-Cushion model 305 Chair
1. Introduction
Thank you for purchasing a new Para-Cushion Chair model 305 Emergency Parachute System from
Strong Enterprises. It is one of the finest available anywhere and with a little care, should last
you a very long time. Rest assured that your new Para-Cushion has been constructed to retain the
durability, reliability, and comfort that Strong Enterprises has been building into its products for
over 50 years. We welcome your comments so that we may continue to improve our products and
help make flying safer and more comfortable.
1.1 Scope
This owner’s manual constitutes the manufacturer’s instructions for the operation, packing, and
maintenance of the Para-Cushion Chair Model 305 (PCC 305) Emergency Parachute System.
1.2 FAA Approval
Originally certified in 1973 under TSO C-23b, standard category, the Para-Cushion parachute
assemblies were upgraded in 1992 and are now FAA approved under TSO C-23c, (in accordance
with AS 8015A category B and FAR 21, Subpart O). A copy of the FAA Approval Letter is on the
inside of the back cover of this manual.
1.3 Operational Limitations
When using the 26ft Mid-Lite Canopy (Strong Enterprises Part Number 420550), this Para-Cushion
is limited to use by persons up to 254 lbs (115kg) fully equipped (person, clothes, and equipment
including parachute) at up to 150 knots IAS.
1.4 Parachute Repack Interval
Your Para-Cushion Chair 305 is designed for a 365-day repack cycle. Your countries laws may dictate
a stricter schedule, check your local regulations. The Para-Cushion Chair 305 must be packed by an
FAA certificated parachute rigger, or foreign equivalent, with an appropriate rating or returned to
Strong Enterprises for inspection and repack. If your Para-Cushion is exposed to moisture, excessive
dirt or is damaged it should be inspected sooner than the maximum allowed.
Note!
USA current repack regulations can be found in FAA FAR 91.307
1.5 Model Description
The unique Para-Cushion system design (U.S. Patent #3,908,937), with externally mounted pilot
chute, allows for a soft, flexible container with protected ripcord pins. The Para-Cushion, is an FAA
approved, manually operated emergency parachute system.
The Para-Cushion Chair 305 (P/N: 124255) is a back mounted container built to extend from the
shoulders of the user to just above the knees. This long design allows the parachute to be packed in
a larger area keeping the system at only 2.5” thin.
The parachute assembly is designed for use in airplanes where your seat is reclined such as a Grob,
Giles 202, the rear seat of an Extra, and many others.
The 26’ (7.92m) Mid-Lite parachute is block constructed using low porosity (Lo-Po) fabric. This fabric
allows less air flow than conventional parachute fabric and therefore provides a slower, more stable
rate of descent.
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1.6 System Function
The Para-Cushion is activated by pulling the ripcord handle. This withdraws the ripcord pins and
releases the locking loops allowing the pilot chute to eject, catch air and extract the parachute canopy
from the container. A “diaper” is sewn to the skirt at the bottom of the canopy. On deployment, the
canopy and suspension lines are extracted from the container. The diaper is released as the last
stows deploy, allowing the canopy to inflate.
Typically, it takes about 2 to 3 seconds from ripcord pull to fully inflated canopy, traveling a vertical
distance of 150 to 300 feet. This does NOT mean that you should plan on jumping or pulling at 300
feet. Deployment time and distance depend on, among other factors, your airspeed.
1.7 Care of Your PCC 305 Emergency Parachute System
Observe these precautions to maximize the service life of your Para-Cushion Emergency Parachute
System. Parachutes are simultaneously very rugged and quite delicate. They are life saving devices
and should be treated with great care. Parachutes are made of nylon, a very strong and durable, but
not invincible, material. Nylon is deteriorated by small amounts of acid and weakened by ultraviolet
sunlight. These surface effects do not seriously influence thicker materials, such as webbing or pack
material, but canopy cloth is very vulnerable. If your Para-Cushion is opened or used, it should be
taken to a certificated parachute rigger, or returned to the manufacturer for airing, drying, inspection
and repack. FAA FAR 65.129 requires that no parachute be packed, maintained, or altered in any
manner that deviates from procedures approved by the manufacturer.
The parachute should be left unopened inside its protective container until ready for use. When you
take your Para-Cushion to your rigger for servicing, they will be glad to allow you to pull the ripcord
yourself, give you a functional demonstration, and answer all your questions. We urge you NOT
to open your parachute in the field for demonstration purposes. Foreign objects can cause costly
damage the canopy.
When your Para-Cushion is in the aircraft, care must be exercised to ensure that it is not damaged.
Be sure that it does not come in contact with any sharp or loose metal surfaces, or any objetcs within
the plane, which might cut or snag it. All metal edges, exposed nuts and bolts, etc. should be taped
or covered to prevent wear on the parachute container. Be sure that your parachute does not come in
contact with water, oils, acids, grease, dirt, agricultural or fire retardant chemicals.
For long term storage the best possible way to store your canopy is unopened inside the carry bag.
It doesn’t matter how long the canopy is kept that way. If you open your para-cushion there are
more opportunities to damage the canopy or lines. If you decide that you must open it and remove
the rubber bands we suggest putting both canopy and lines directly into the cloth bag (laundry
bag, pillow case). The reason we don’t recommend a plastic bag is that nylon “breaths”. Or more
specifically it will absorb and release moisture and stabilize to the ambient humidity levels. If it is
trapped in a plastic bag there is more opportunity for mold/mildew to grow, while a cloth bag allows
the breathing process to continue.
! WARNING !
Leaving your packed parachute system exposed to the sun
will greatly decrease its service life.
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Strong Enterprises owner’s manual. Para-Cushion model 305 Chair
1.8 Service Life
FAA FAR 65.129 requires that “No certificated parachute rigger may pack a parachute that is not
safe for emergency use”. The continued airworthiness of an assembly is at the discretion of the
FAA licensed parachute rigger’s inspection during repack. While proper care can no doubt extend
its usefulness, an older parachute should be examined more closely for signs of deterioration. Your
parachute is a sensitive piece of life saving equipment and should be treated as such. However, it
should not be expected to last forever, even with proper care.
1.9 Preflight Inspection
The parachute must be inspected by the wearer prior to each use. Check it visually for any unsafe
condition. Be sure the harness is not twisted or misrouted. Be sure the fittings are not rusted. Be
sure the ripcord handle is securely in its pocket (under the fabric pocket covering). Lift Velcro® on
the back pad and check ripcord pins. Be sure they are properly seated in their loops. All pins should
extend at least 1/2-inch beyond the fabric locking loop. Be sure the rigger’s seal and thread are still
intact around the furthest pin. That is your assurance it has not been opened since it left the rigger’s
packing table. Check the packing data card in the nearby pocket to be sure that the parachute is
current and has been repacked in accordance with regulations.
1.10 Fitting the Parachute Harness
Strong Enterprises produces 3 basic harness designs: the standard fixed harness, the fully adjustable
harness, and the aerobatic harness. Below, please find proper fitting for each of these models.
Standard Fixed Harness - This harness has 3 adjustment points, one on the chest, and one on
each leg. If you are putting the parachute on for the first time, unsnap the hardware on the straps,
loosen the three adjustment points, and slip your arms through the main lift web (the vertical straps
in front), much like putting on a jacket. Next, reach between your legs, pick up each leg strap,
untwist them if necessary, and snap them in place on each side of the lower portion of the main lift
webs. Lean forward, pull the leg straps below your hips, and tighten them snugly, yet comfortably
around your thighs. Finally, snap and adjust the chest strap. Fold and stow the webbing ends in
the elastic keepers. Be sure the ripcord handle is securely stowed, yet accessible.
Fully Adjustable Harness - The fully adjustable harness allows you to custom fit your harness.
To properly adjust this harness, first loosen all adjustment points all the way out. Then put on the
parachute as explained above being sure to fit the leg straps snugly. Then stand at attention and
take up the slack in the main lift web (vertical straps) by pulling on the harness ends located just
above the leg pads. This should pull the straps down snug over your shoulders. Next adjust the
horizontal back strap (located behind you at the leg junction) to come in contact with your back.
This strap need not be tight for a comfortable fit. Finally, snap and adjust the chest strap, fold and
stow the webbing ends in the elastic keepers. Be sure the ripcord handle is securely stowed, yet
accessible.
Aerobatic Harness - The Aerobatic, or two-point harness moves the snaps normally located on the
leg, to the middle of the chest, thereby preventing interference with your seat belt. To properly don
this harness, loosen the two adjusters all the way out. Slip your arms through the main lift webs
(the vertical straps in front), much like putting on a jacket. Then reach between your legs, pick up
the right leg strap, untwist if necessary and thread the right strap through the loop located on the
right main lift web at the leg junction. Take care not to twist the strap. Next, snap it in place at the
chest on the opposite (Left) main lift web. Repeat the process for the left strap. The straps should
be adjusted tight, but not so tight that it restricts your ability to stand upright. Resist the urge to
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over tighten the straps once you are seated. Fold and stow the webbing ends in the elastic keepers.
Be sure the ripcord handle is securely stowed, yet accessible.
1.11 Plan Ahead
Be prepared in the event of an emergency situation. Know and rehearse your emergency
procedures before they are needed. With the parachute on, sit in your cockpit and fasten your lap
and shoulder belts. Be certain these are over your parachute harness. Wear gloves, helmet and
goggles, even headphones if you normally use them. Mentally organize your bailout procedure.
Inspect your cockpit for projections or sharp edges that may damage the parachute, or injure you.
Consider canopy ejection, oxygen disconnect, or other requirements that you may be faced with.
All these things take time, and an emergency leaves you little time for errors. Generally, you are
better off staying with the aircraft if it is controllable. However, your margin of safety is reduced
as time passes evaluating your situation. With time many situations can get worse. Make your
decision quickly because all these actions consume altitude.
1.12 How to Get Out of the Aircraft
There are only two steps to remember when you must leave your aircraft. 1) Get clear of the
aircraft, 2) then pull your ripcord, in that order. If the parachute begins to open while you’re still
aboard, the wind may inflate it, dragging you out or into the tail. Also, it may entangle with the
aircraft. There are no other rules - the aircraft may be tumbling, spinning, or inverted. Simply
get yourself out any way you can. Clear the aircraft and pull your ripcord immediately. There is
enough oxygen to breath and you’ll be descending into denser air.
1.13 How to Open Your Parachute
The ripcord handle is located near the chest strap on the wearer’s left front of the harness. The
key is to:
LOOK at the ripcord handle, rather than fumble or tug on a harness fitting. Beneath the fabric
cover, the ripcord handle is held in place by a pocket. Look at it first because it may have been
dislodged by your exit.
REACH over and grab it with both hands (typically with your right hand and left thumb), and
PULL! This is no time to be gentle!
If the ripcord doesn’t come free on the first pull, check to make sure it is the handle in your hand,
not some other piece of hardware. Back the handle up to the housing to create slack in the cable,
then punch it out again. The entire cable assembly should come completely out of the housing.
To reduce the pull force, push the handle in the direction that the protective ripcord housing
points - rather than straight out from your chest. The ripcord housing on the Para-Cushion Chair
model 305 comes over your shoulder, so push the handle down toward your feet. By having both
hands together on the handle, you also reduce the chance of the canopy or lines entangling with an
extended limb. Keep your feet together for the same reason. Body position is secondary to pulling.
Remember to LOOK-REACH-PULL.
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Strong Enterprises owner’s manual. Para-Cushion model 305 Chair
1.14 How to Steer
Having a steerable parachute reduces your rate of descent, increases your stability, and helps you
avoid obstacles such as buildings, trees, water, and power lines. The parachute drifts with the
wind and has a forward speed of about 6 MPH, which can be directed with or against the wind
using the built-in steering vents in the rear.
The canopy may be turned by pulling down on the webbing toggles, located on the rear of the
risers, just above your head. An 8-12 inch pull will produce a slow rotation. Excessive pulling will
not improve the performance.
1.15 Landing and Recovery
Ideally, you want to reduce your landing speed by facing into the wind (or quartering slightly).
Avoid all but very slight turns below 200 feet.
Push your feet and knees tightly together and point your toes slightly so you don’t land on your
heels. The tension caused by keeping your ankles and knees pressed tightly together increases
their individual support, reducing your chance of injury. Keep your elbows in and try to look at
the horizon, not down at the ground. This will give you a better idea of your altitude (much like
looking out the side, rather than over the nose during a landing flare).
If the wind keeps your canopy inflated after touchdown, you may be dragged. Pull in the lines
closest to the ground to spill some air, and then run around the canopy to collapse it.
In most cases you can maneuver the canopy as necessary to avoid as many obstacles as possible.
In the event of a tree or power line landing, keep your feet together so you don’t straddle a limb
or wire. Be prepared to slide through and hit the ground afterwards. You should be able to avoid
power lines, but if not, throw away the ripcord -- it is an electrical conductor. If suspended from a
power line, do not attempt to climb down and do not accept assistance from anyone until the power
has been shut off.
To prepare for a water landing, the chest strap may be unfastened (except with the Aerobatic
harness) as long as you cross your arms in front of the harness to prevent falling out. Depth
perception over water is difficult, so do not attempt to leave your harness above the water. Take
a deep breath just before you splash down. Once under water, unfasten your harness straps and
swim as far as possible upstream, allowing the canopy to blow away from you. Entanglements with
wet nylon cloth and lines can weigh you down.
1.16 Reporting of Recommendations
In our effort to continuously improve our products, processes, and services, we invite you to send us
your comments and suggestions. As a user of this equipment, you are uniquely suited to provide us
with valuable feedback regarding design and/or performance. Feel free to tell us what you like and
what you don’t like. Send us an email or mail a letter to:
Strong Enterprises
11236 Satellite Blvd.
Orlando, FL 32837
[email protected]
11236 Satellite Blvd. Orlando, FL 32837 Tel.: (407) 859-9317 Fax: (407) 850-6978
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Strong Enterprises owner’s manual. Para-Cushion model 305 Chair
2. 305 Chair Model Description
9
The Model 305 Chair measures 42” long (105 cm) by 16” ( 40 cm) wide by 2.5” (6cm) to 1” (2.5cm) thick and
weighs approximately 16.5 lb. (7.5 kg).
This back mounted container is built to extend from the shoulders of the user to just above the knees. This long
design allows the parachute to be packed in a larger area keeping the system as thin as possible. Confor© Foam
padding throughout the system allows the user to comfortably sustain flight for many long hours.
The parachute assembly is designed to be used in airplanes where your seat is reclined such as a Grob, Giles 202,
the rear seat of an Extra, and many others.
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Strong Enterprises owner’s manual. Para-Cushion model 305 Chair
2.1 Parts List
Harness and Container Assembly
121100
26-foot Mid-Lite
420550
Locking Loop
861047 (black / with Mid-Lite)
Cap for Pilot Chute
799030
Ripcord Assembly
611366
Pilot Chute, Lil Grabber
790121
Carrying Bag
816006
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Owner’s Manual
510088
Strong Enterprises owner’s manual. Para-Cushion model 305 Chair
3.0 Required Packing Tools
A - Shot Bags at least 4
A
B - Line Separator 1 ea
C - Pilot Chute Locking Rod 1 ea
D - Pilot Chute Locking Strap 1 ea
E - T-handles 3 ea
B
F - Pull-Up Cords 3 ea
G - Tension Plate 1 ea
F
E
D
H - Tension Hook 1 ea
I - Fid 1 ea
C
G
H
I
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Strong Enterprises owner’s manual. Para-Cushion model 305 Chair
4. Prepare Parachute for Packing
1.
2.
3.
4.
Gather the appropriate tools.
Always count your tools to ensure you don’t leave any in the packed parachute.
Lay the harness, container and canopy down on the table with the harness facing down.
Attach canopy apex to tension hook and attach container to tension plate. By tightening both
ends, canopy will be stretched out allowing easier inspection and packing.
5. Pre-Packing Inspection
Always perform the following inspection prior to packing:
•Inspect the entire assembly for any damage.
•Inspect pilot chute and bridle.
•Check that the Larks-head knot on the pilot chute is secure.
•Inspect Apex area.
•Check over entire canopy for damage.
•Inspect lines for damage.
•Check line sequence and control lines.
•Perform a complete suspension line continuity check.
•Check the barrels on #6 rapide link for cracks.
•Check that links are tight.
•Inspect Harness and Container assembly.
•Check that the elastic stow bands are in good condition.
•Check tackings for tightness and condition.
•Inspect Hardware for functionality and condition.
•Inspect Harness for nicks, abrasions, and sun damage.
•Check that ripcord is snug in pocket.
•Check closing loop length. Loop should be 8.5” with a tolerance of - 1/4”
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Strong Enterprises owner’s manual. Para-Cushion model 305 Chair
6. Packing the PCC 305 Emergency Parachute
6.1.1
Lay harness, container and canopy
down on the table with the wearer
side facing down. Inspect entire
assembly for completeness and any
damage. Flake canopy and pleat
in the normal manner with an
equal number of gores to each side.
Diaper should be between table and
canopy.
6.1.2
Fold skirt up 90º on each side
parallel to the radial seams.
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Strong Enterprises owner’s manual. Para-Cushion model 305 Chair
6.1.3
Fold the canopy into thirds by
bringing the sides up to the middle.
First right side and then left.
6.1.4
Long fold the canopy into fifths,
long and tight, bringing the right
side just past center then folding
the left side over center.
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Strong Enterprises owner’s manual. Para-Cushion model 305 Chair
6.2 Securing the Diaper
6.2.1
Spread diaper out flat. Bring lines
on the LEFT-HAND GROUP ONLY
loosely up over skirt.
! WARNING !
DO NOT tuck the lines inside the folded canopy.
Tucking the lines in the canopy can cause serious
burns to the canopy and lines.
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Strong Enterprises owner’s manual. Para-Cushion model 305 Chair
6.2.2
Wrap the diaper around the skirt
and left line group. Bring rubber
band through upper grommet and
lock in place with 1 1/2 inch bight
of line from left line group.
! WARNING !
Put only the left line group of lines inside the diaper.
Otherwise the purpose of the diaper will be defeated,
allowing it to release before all lines are unstowed.
6.2.3
Continue to secure the diaper by
bringing remaining rubber bands
through their respective grommets
and locking in place with 1 1/2 inch
bights of line from left line group.
Note:
If using shorter
(1 1/4 inch) rubber
bands, a single wrap is
sufficient. If using large
rubber bands, double
wrap each stow.
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Strong Enterprises owner’s manual. Para-Cushion model 305 Chair
6.3 Riser Placement
6.3.1
Lay risers in the container and
spread the links so they are not on
top of one another. Take a bight of
line immediately above the links
and stow in rubber bands.
6.4 First Line Stow
6.4.1
Right line group will be 14-16”
longer than the left line group.
Bring excess line to container end,
keeping lines even from canopy to
container.
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Strong Enterprises owner’s manual. Para-Cushion model 305 Chair
6.4.2
Stow the first bight of lines in the
third rubber band on the wearer’s
lower left corner of the container.
6.5 Excess Line Stows
(Right Line Group)
6.5.1
The resulting “excess” length of
line from the right riser will have
only one-half the total number of
suspension lines. Stow this excess
from the right line group on the
right side of the container, in the
upper right inboard rubber band.
To do this, route the lines diagonally
from the first stow to the top of
the container, and stow using the
rubber band closest to the center of
the pack tray.
Note!
When the 3-stow diaper
is used, this bight may be
doubled back on itself before
being placed in the rubber
band. With the 2-stow diaper,
this will not be necessary.
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Strong Enterprises owner’s manual. Para-Cushion model 305 Chair
6.6 Remaining Line Stows
6.6.1
Proceed with stowing the remainder
of the lines. The next stow is in the
upper left corner of the container.
6.6.2
Continue stowing down, up, down
until a total of five rubber band
stows are on the left side of the
container. There should be two
stows in the top left corner, and
three stows in the bottom left
corner.
11236 Satellite Blvd. Orlando, FL 32837 Tel.: (407) 859-9317 Fax: (407) 850-6978
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Strong Enterprises owner’s manual. Para-Cushion model 305 Chair
6.6.3
Route the lines between the lower
two grommets and make the next
stow in the bottom right inboard
rubber band in the lower right part
of the container.
6.6.4
Continue stowing on the right
side of the pack, from inboard
(left) to outboard (right), until all
but enough line to allow for skirt
placement is stowed. If, after the
last stow at the top, more than
16” of line remain, a short stow
may be made at the top of the
container. This will be adjacent to
the previous line stow, without the
corresponding stow in the bottom
of the container. We recommend
the use of the 1-1/4” rubber bands,
but alternatively, any or all stow
bands may be doubled if necessary
to retain line stows securely.
Make sure to put protective flaps
above the lines and risers as shown.
11236 Satellite Blvd. Orlando, FL 32837 Tel.: (407) 859-9317 Fax: (407) 850-6978
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Strong Enterprises owner’s manual. Para-Cushion model 305 Chair
6.7 Placing Canopy Into
Container
6.7.1
Insert a T-handle through each
of the three grommets from the
outside of the container.
Place the diapered skirt in the
wearer’s upper right hand corner of
the pack, with the canopy extending
across the top of the container.
Although the diaper may be twisted
slightly to reduce lumps, stow the
canopy “flat,” not turned on edge.
Fold canopy 90° “down” the left
side of the container, then back
up. Position this fold between the
side flap of the container and the
central divider flap that protects
the three grommets in the base of
the container. “Size” the bottom
part of the fold by laying it on top
of the pocket. The end of the fold
should extend to within 1-inch of
the edge of the pocket.
6.7.2
Fold the canopy diagonally from the
wearer’s left shoulder down between
the second and third grommet, to
the bottom of the pocket. The end
of the fold should extend to within
1-inch of the edge of the pocket.
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Strong Enterprises owner’s manual. Para-Cushion model 305 Chair
6.7.3
Make one long fold from the bottom
of the container to the diapered
skirt, followed by a shorter fold.
Spread the apex out flat, and route
the bridle to the center of the pack
between the top two grommets. All
folds should be fairly loose to evenly
distribute the bulk of the canopy
throughout the pack.
Without disturbing the folds, split
and fan the canopy evenly over the
width of the pocket. Distribute the
canopy uniformly into the pocket to
prevent lumps.
Feel the outside of the pocket for
lumps and adjust accordingly.
6.8 Closing the Container
6.8.1
To close, make sure the protector
flaps (around the grommets) are
between canopy and T-handles.
Place bottom flap grommet over
T-handle. Next place right side
flaps over T-handles, followed by
left flap, concluding with the top
flap.
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Strong Enterprises owner’s manual. Para-Cushion model 305 Chair
6.8.2
Stand the pilot chute upright on the
locking rod. While compressing pilot
chute, neatly and symmetrically
tuck the pilot chute’s canopy cloth
in between the coils of the spring.
Continue until the pilot chute is
fully compressed and lock with
locking strap.
Note!
Locking rod and strap
should be at 90° angle to
closing loops.
6.8.3
S-fold pilot chute bridle and place
under left side flap. Pass the pullup cords (3) through the closing
loops in the pilot chute cap and
the closing loop that is attached to
the left side flap. Next center the
pilot chute between the upper two
grommets. Pass the ends of the
pull-up cords through the slots in
the T-handles.
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Strong Enterprises owner’s manual. Para-Cushion model 305 Chair
6.8.4
Hold the pilot chute in position with
one hand and flip the container over
onto its back.
6.8.5
Draw the pull-up cords through
the grommets by removing the
T-handles.
11236 Satellite Blvd. Orlando, FL 32837 Tel.: (407) 859-9317 Fax: (407) 850-6978
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Strong Enterprises owner’s manual. Para-Cushion model 305 Chair
6.8.6
Working from the top, pull the
locking loop through the container
and insert ripcord pin. Once all
three pins are in place, remove
pull-up cords slowly to avoid burns.
6.8.7
Turn rig over and remove pilot
chute locking rod and strap.
Use a fid to tuck the excess pilot
chute fabric under the rim of the
cap. Dress the pack neatly and seal
the bottom pin. Complete the data
card and your rigger’s logbook. Be
sure the ripcord handle is secure in
its pocket.
When the pack job is finished, the
pilot chute should be centered on
the back, and sunk down below the
sides of the pack.
! WARNING !
Count your tools to
assure you have not
left any in the packed
parachute.
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Strong Enterprises owner’s manual. Para-Cushion model 305 Chair
7. Repair Guidelines
The following repair specification is set forth to aid riggers in the maintenance of Strong Enterprises’
parachutes. Repairs must be made only by appropriately rated FAA certificated parachute riggers.
CANOPY
TYPE OF REPAIR
LIMITATIONS
Re-stitching:
No limit as to length or number
Patch, single side:
Size limit: 50% of panel area
Limit of 3 per panel, 15 per canopy
Panel replacement:
Limit 9 per canopy
Radial Seams:
Size limit: 12”, no more than 4 per canopy
Lateral bands:
Damage: size limit 2”
UpperLimit: 1 per canopy
LowerLimit: 4 per canopy
“V” tabs:
No limit
Suspension Lines:
No limit
PILOT CHUTE CAP
Replace when Spandura® fabric becomes worn.
LOCKING
Replace one time per year. Length for Para-Cushion Model 305 Chair locking loop is 8.5 inches,
tolerance (+0), -1/4 inch. Replace if out of tolerance or worn.
BRIDLE
Damaged bridles should be replaced.
CONTAINER
Standard military single side patches or replacement of the damaged area is authorized.
HARNESS
Any portion of the harness which is structurally damaged should be replaced in a manner to duplicate
original equipment.
RIPCORDS
Damaged ripcords should be replaced.
DATA CARD
Data cards should not be discarded or replaced. When filled, they should be attached to a new card so
a complete log of packing, repairs, and alterations is recorded. This is the history of the parachute.
Note!
Darning and ripstop tape are not authorized for certified canopies as
they may weaken the fabric. Single side patches are recommended for
even small damaged areas.
11236 Satellite Blvd. Orlando, FL 32837 Tel.: (407) 859-9317 Fax: (407) 850-6978
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Strong Enterprises owner’s manual. Para-Cushion model 305 Chair
8. Changing the Pilot Chute Loop and Cap
8.1
The Para-Cushion Model 305 Seat has
a pilot chute cap with a Spandura®
Rim. This Spandura® Rim is handtacked to the top of the pilot chute at
90º angles to the loop openings. By
snipping this hand tacking, you can
easily remove the cap and lift it off.
8.2
Once the cap is removed, remove the
loop by snipping the hand tacking.
Install a new locking loop by hand
tacking the Type 4 tape to the pilot
chute top, (do not hand tack the
canopy of the pilot chute) followed
by a good surgeon’s knot. Position
new loop so that Type 4 material is
between loop and pilot chute.
Note!
Pilot chute loop must
be placed as close to
dead center as possible.
Being off even a couple
of degrees may cause
the pilot chute to sit
improperly
on
the
packed container.
8.3
If you are replacing the cap, you must
make two small holes where the loops
will come through the Spandura®.
Do this near the seam in the binding
tape.
11236 Satellite Blvd. Orlando, FL 32837 Tel.: (407) 859-9317 Fax: (407) 850-6978
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Strong Enterprises owner’s manual. Para-Cushion model 305 Chair
Rigger Tip: Once you have cut
the first hole in the Spandura® for
your loop to come through, fold the
cap perfectly in half at that hole,
making a crease. Unfold the cap,
and you can see just where 180º is
and where your other hole should
go.
8.4
Once the holes are cut, install the
new cap over the loop by aligning
the loop ends with the holes in the
Spandura® cap and pulling the loop
through the holes with your hand
tack needle.
Hand tack the new cap in place at
90º angle to the loop.
Note!
Be careful not to catch
the pilot chute canopy
cloth below the stitch
line at the top of the pilot
chute. Doing so may
result in stress being put
on the cloth resulting in
a hole in the canopy.
11236 Satellite Blvd. Orlando, FL 32837 Tel.: (407) 859-9317 Fax: (407) 850-6978
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Strong Enterprises owner’s manual. Para-Cushion model 305 Chair
9. Installing the Toggles
9.1
Thread the steering line through guide
ring then through the grommet in the
toggle, starting from the underside of
the toggle (the side with Velcro®).
Lay the toggle on the riser where it
will be when set, and measure where
the steering line should be tied. There
should be one or two inches of slack in
the steering line after the rest of the
lines are pulled tight.
9.2
“Figure-8” the line through the
grommet and secure with an overhand
knot. If the steering line is thin, as
in the Mid-Lite, or Lite, a second
“figure-8” may be necessary to fill up
the grommet hole.
9.3
Mate the Velcro® to secure the toggle
to the riser.
9.4
For original Para-Cushions (old style)
that utilize a metal ring instead of
cloth toggles, route the steering lines
through the guide ring on each riser.
Zig-zag stitch a 1 1/2 inch loop (trim
the excess line) then slip loop through
and over a 1 inch ring or through the
steering loop.
Safety tie each steering ring to the
riser immediately below the guide ring
using seal thread (cotton 24/4), one
turn, single ply.
11236 Satellite Blvd. Orlando, FL 32837 Tel.: (407) 859-9317 Fax: (407) 850-6978
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Strong Enterprises owner’s manual. Para-Cushion model 305 Chair
Notes:
11236 Satellite Blvd. Orlando, FL 32837 Tel.: (407) 859-9317 Fax: (407) 850-6978
www.strongparachutes.com
AVAILABLE OPTIONS TO CUSTOMIZE YOUR
Para-Cushion Model 305 Chair
Custom Monogram PN:099105
We can monogram your name, N number, Company Name, Nose Art or anything you
can imagine. Space provided 6” X 2.5”
G-Pad Cushion PN: 812113
An auxiliary pad that attaches to the back pad of any Para-Cushion. G-pad is formed to
snugly fit around the pilot’s sides providing extra support during high G maneuvers.
Aerobatic Harness PN:260050
Moves the adjustment points from your thigh to your chest. Use for high G maneuvers.
Sheepskin Back Pad PN:812108
Sheepskin pads keep you cool in the summer and warm in the winter.
Lumbar Support Pad PN:812133
A rounded Tempor® foam pad that attaches in existing channel. Adjustable to just the
right position in the small of your back.
Capewell Riser Releases PN:099114
Allows you to release the canopy once you have landed in case of high winds, water or
tree landing.
Quick Ejector Snaps
PN:099113 (3 each) or PN: 099112 (2 each)
Military Style hardware replaces B-12 snaps. Allows you to lift the gate and
eject the hardware instead of reaching under and lifting.
Call or email for more information and pricing.
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