Joined: 20 Sep 2008
|Posted: Thu Feb 23, 2017 12:41 pm Post subject: CANADIAN Builders - Change in MD-RA Inspections
I received word today that MD-RA will now allow builders to elect to whether or not they want to be inspected under CARS 549.01 or the Exemption to 549.01. I expect something to this effect to be on their website *soon*.
For Canadian kit builders, the only big difference is 549.01 does not require installation of a gascolator - something that adds no earthly value to a low wing aircraft equipped with tank drains and in line fuel filters.
The only other differences that I am aware of is small changes to the data plate and wording of various placards.
When I originally had my -10 inspected, I had to install two gascolators - one in each wing root as I didn't want to put a gas filled aluminum vessel on the firewall. This was purely a safety issue in case of a FWF fire. To have the drain accessible, it would have been near my exhaust stacks as well as the fuse bottom skin.
When I swapped out my Subie engine to an IO540, Transport Canada (not MD-RA) used CARS 549.01 as the inspection standard and so I didn't need a gascolator! As the wing roots were now "free", I moved my fuel filters to the wing root where they are infinitely more accessible for from inspection and cleaning.
Parenthetically, the MD-RA requirement was that the gascolator be mounted in the lowest point of the fuel system. In a -10, that would mean installation below the tank, external to the wing. They didn't require this but that is the only way to comply with the rule!
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