Here you go buddy... I did call the factory. The FAA has never put a a/d or life limit on chutes. Here is the letter from the FAA... You can also find more info on the subject on Pennsylvania parachutes site or call the Faa.[QUOTE these DO NOT have a 20 year life limit]
The manufacturer will say otherwise.
I have around 3500 jumps. With sport parachutes the nylon is NOT the first thing to wear other than abrasions. burns or punctures all of which can be safely and legally patched. It is the lines that wear out from repeated openings. We often jump a parachute for 500+ jumps, reline it and jump for another 500+ jumps, repeat. That is a lot of wear and UV exposure and the parachute is just fine. Opening shock stretches the lines so the parachute gets out of trim. The lines themselves are not really an issue other than trim. I feel perfectly safe jumping a rig that is 20+ Years old as long as it is inspected by a trusty Master Rigger. Especially a parachute that has never seen sunlight ever in it's life.What is the life of my parachute system? [−]
FAA FAR 65.129b 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 re-pack. While proper care can no doubt extend its usefulness, an older parachute should be examined more closely for signs of deterioration.
Strong Enterprises recommends returning the system to us every 5 to 8 years for complete inspection and any updates that may be required.
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.