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Chasing a fuel leak for 3 days, it was a $2 O-ring
Spent 72 hours at the hangar in Phoenix chasing a drip off the right wing on a 737. Swapped the main fuel pump, checked the lines, even pulled the access panels twice. Turned out the O-ring on the crossfeed valve was dry rotted and a $2 part fixed it. Anyone else burn a whole weekend on something that small and obvious only in hindsight?
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fisher.thomas29d ago
72 hours in Phoenix for a two dollar ring is rough but that's just how it goes sometimes. A dry rotted O-ring on a crossfeed valve isn't really a small miss though, that's a tiny part buried behind panels and it can look like a dozen other things. Calling it obvious in hindsight is a stretch, most guys would've thrown parts at it too before finding that.
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