mark

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Everything posted by mark

  1. Is your secondary character a nice guy? Does he actually intend to catch her, or is he going to just step out of the way? One way they both get badly hurt; the other way only she gets badly hurt. The second story window in your house is about 15 feet above the ground. Imagine jumping out and being caught by someone standing on the ground.
  2. What the O.P. doesn't realize is that his friends and family are already skydiving. He just needs to meet them.
  3. No. The first 10-20 pound stretch is for marking. I didn't mention: cutting must be done with a hot knife, not shears or scissors, so sheath and core are both tensioned the same to share the load.
  4. Poynter's procedure comes in two parts. First is tension for marking -- see Vol 1 para 7.25.H.4, on page 399: 10 pounds for Type-2, 20 pounds for Type-3, and mark within 30 seconds of applying tension. Then there is pre-stretching, in 7.25.H.5: "Pre-stretch the line by applying tension to the full line equal to 10% of its rated strength (55 lbs for Type-3 line and 40 lbs for Type -2 line) for 15 minutes. Relax tension and remove the line from the [tension device]." I have no idea why additional pre-stretching/tensioning would be required after marking the line.
  5. You can always find someone to agree with you if you are persistent enough. All we ask is that you get video of your jump. At least the landing. National, Para-Phernalia, and Precision all choose not to service equipment more than 20 years old. Sunpath and RI have made similar statements. In these cases, the manufacturers acknowledge that these life limits are not legally binding, so riggers will not be in trouble with the FAA if they pack them. They are still exposed to civil liability, but if they are not concerned about liability, they can be blase about finding themselves in court after an accident, being asked, "What exactly do you know that the manufacturers do not?" Ask your "Rigger in the US" if he is okay with packing a RI Aviator pilot rig that is more than 15 years old, or if he is okay with packing a PD reserve with more than 40 packs (one that has not been reinspected and recertified by PD), or if he is okay with packing a Security 950 more than 10 years old.
  6. You can email me directly: [email protected] --Mark
  7. I think you are asking if you need to ask permission to do make the change. That depends on how you interpret "parachute" in Part 65.125(c): If you think "main parachute" means all the stuff that goes with it, including main container, bag, pilot chute, etc., then you don't need permission (my preferred take on the meaning of the regulation). If you think "main parachute" means just the canopy, then you're stuck with asking the manufacturer or your local FSDO and you might as well abandon your project. BTW, Strong Enterprises made a drogue-equipped student rig several years ago, but it never caught on.
  8. Why do some tandems open hard, and why wouldn't that happen with your notional design?
  9. "Workable" implies that it actually works, not that it might possibly work. How far have you gotten in development?
  10. If the pilot has only one altimeter, he can set it to MSL and do the mental calculation to get AGL for skydivers, or he can set it to AGL and do the mental calculation to talk to ATC or other airplanes. ATC and collision avoidance are generally more urgent and the consequences of miscalculation more immediate, so setting to MSL is more common. What I don't get is why anyone is arguing with the pilot at all. If you need more altitude, just decline to jump and ask for a higher pass.
  11. The TSO'd free bag and reserve pilot are required to be marked with the manufacturer's address. With the factory closed, what address is he using?
  12. Airborne Systems Flip
  13. I can confirm that the Trap releases under circumstances similar to all the other non-Infinity MARDs, especially folding-bridle MARDS like Boost and Ace.
  14. The Trap can release under circumstances similar to all the other non-Infinity MARDs.
  15. They were going to die anyway. If you leave the rigs in the cockpit when you exit on the ground, you'll leave them in the cockpit when you exit in the air. It's just muscle memory and habit.
  16. You know what else is insane? Believing this is common.
  17. I can't think of a single DZO or instructor who is looking forward to a bonanza from recurrency jumps.
  18. [email protected] in Ottawa IL is an Icarus repair station
  19. Walt/Jerry -- are you sure you're not thinking of the RI Aviator, which does have a 15-year service life?
  20. I agree -- except I think there will continue to be a possibility of new contamination once we start jumping again. We need to start thinking about what the protocols will be.
  21. We don't have a good way to protect or clean virus from textiles (attachment below from US Army). If you are cleaning around your parachute equipment, you should protect your equipment from aerosols, droplets, or other cleaning agent contamination that could damage the material. Many cleaning products are adverse to nylon. To see examples of what might work and what doesn't, you can start with the following page: https://www.calpaclab.com/nylon-chemical-compatibility-chart/ . Finally, some cleaning agents are adverse to our metal hardware, particularly bleach and chlorinated cleaners like Clorox wipes (attachment below from Bourdon Forge; the important paragraph is near the end). MOR for Parachute Textiles During COVID19 Industry & Military 30 Mar 2020-signed.pdf COVID-19 Letter.pdf
  22. Precision declines to service reserves more than 20 years old.