Normally I don't endorse products, but I did want to followup on this item. I have about 170 hrs on my RV-10 and originally installed the Van's safety latch during the build process. At one point, during an aggressive ground runup with just the safety latch engaged on a hot day, the prop blast twisted the door and the safety latch failed. At that point, I lost all trust in the ability of this safety latch to hold a door on in flight. This was further confirmed after reading a few months ago about a door loss with the safety latch installed. With the flex of the door, there is no way the safety latch is going to work at cruise speeds with the door sticking out an inch into the slipstream (one engineers educated opinion).
During my first annual in May, I bit the bullet and paid for Sean's system. Retrofitting it required deviation from the directions because I had to remove the Van's latch that was in approximately the same spot, but I made it work, and the metal that exists due to the Van's latch gives extra strength to the new solution at the middle of the door.
I can not say enough about the new system. Not only does it make the door much easier to close with my tight seals, it also allows the door to open with just the handle. If you are still in the building process, I would highly recommend that you at least consider this solution.
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