Update: Tried that new UV dye for finding leaks on a King Air fuel line

Honestly, I grabbed a bottle of the Aero-Glo UV dye last week to check a small seep on a King Air 200. Ngl, I figured it would just show the main leak, but under the black light the whole section of line lit up with a bunch of tiny micro-cracks I couldn't see before. Ended up replacing a 4-foot section I thought was fine. Has anyone else had a simple check turn into a bigger find like that? What's your go-to method for sneaky fuel leaks?

3 comments

3 Comments

jamesm381mo ago

Whoa, hold on, I gotta disagree a bit here! That dye sounds like it did its job perfectly by showing you the real problem. Calling it a "simple check turning bigger" misses the point. The whole goal is to find what you can't see with just your eyes. If it showed a bunch of micro-cracks, then that check just saved you from a future, way worse leak. My go-to is still a careful visual and a good leak check, but if a tool shows you more, that's a win, not a surprise.

mark_mitchell1mo ago

My buddy found a whole spiderweb of cracks that way.

oscar7431mo ago

Yeah, that dye doesn't lie! Once you see that spiderweb pattern, you know the whole section's toast.