ron74887 wrote:j3pup, aircraft spruce vented original style--- search fuel caps
FC3487-2 FC3487-2 VENTED FUEL CAP #2 $10.60
I installed these on my plane with the AI approval. they are vented. Ron
Here's a link to the caps Ron is suggesting (more on that later):http://www.aircraftspruce.com/catalog/a ... elcaps.php
You can also buy gaskets for your present caps (the ones in the link fit) for only $2.
Now,...this is only MY opinion. (It's worth about what Ron's IA's opinion is.)
Just because some AP/IA says something is "OK" ...does not necessarily mean it is in accordance with what FAA or Cessna says. Unless the supplier is able to provide proof of FAA-PMA or other approval basis, those caps are suitable for experimental aircraft only.
While the "generic" caps in the "link" will probably work just fine, and as they are just about as simple as can be.... they are NOT approved caps for our airplanes. The genuine Cessna caps are what should be used, in my opinion.
While the generic caps are simple-enough, and while they will likely work forever, they do not have a vent check-valve like the genuine Cessna caps have. They will therefore, allow rain and water to more easily enter the fuel system. (Water will probably get in there anyway with the condition of most of our genuine caps gaskets and "moats", but the generic caps are simply metal caps with a hole drilled in them, and are most suitable for a tractor or other vehicle with a "door" or hood to protect that cap.)
I'm not criticizing anyone's choice to use the generic caps. I've even provided them to a "certain goofy" we all know who visits these forums, who put them on his wife's C-150, and I admit they look and work just fine on that hangared aircraft. They have not caused a single problem on that hangared aircraft or it's empty fuel system as it has sat there for 4 years in the hangar.
Are they legal? Yes. As long as that airplane sits in that hangar.
But until someone gets an STC or PMA or other approval for installation, that airplane is not likely really airworthy with those caps. Neither is a certain airplane in Looeasyana that a certain alligator tour-guide has, despite what his IA says.
(unless the "rest" of the story involves some field approval, or similar, etc.)
Painting them red
would be nice.