Three days from hell with a Cessna 172's fuel system

Last Tuesday I pulled a 172 into the hangar for a routine annual and found a quarter cup of water in the fuel sample. I spent Wednesday chasing a leaky gasket on the selector valve, only to discover the O-ring was the wrong size. Thursday morning a coworker knocked over my coffee onto the inspection paperwork, so I had to rewrite it all. By Friday the plane was running fine but I smelled like avgas and was ready to quit. Has anyone else had a simple job turn into a full week of headaches?

3 comments

3 Comments

wyatta3021d ago

Man that fuel sample would've had me second guessing everything. Water in a 172 tank is no joke, takes forever to fully drain and dry out. Sounds like the universe just decided you needed a crash course in patience though lol. Leaky selector gaskets are the worst because you think it's a quick fix until you realize someone before you used the wrong parts. Then you're hunting through the parts bin wondering who thought that O-ring would hold. And getting coffee dumped on your paperwork just hurts. Nothing worse than having to rewrite a whole inspection log from memory because your notes are now a brown stain. Bet that first flight on Friday felt like a victory lap though. Sometimes those nightmare weeks make you appreciate the simple jobs even more.

spencer_wood12d ago

Heard a mechanic once say the worst part of water in a tank is you never really know if you got it all until you're airborne. That feeling of second guessing everything has got to be brutal.

mary83621d ago

Three days for a fuel system issue that should've taken one, and somebody's coffee had to get involved too. That selector valve O-ring thing is a classic "thanks, previous guy" moment, like whoever did it figured a loose fit was close enough. The water in the tank probably had you checking your own sanity, wondering if the plane just hates you specifically. Rewriting inspection logs from memory is basically a test of how much you actually pay attention during the job. At least by Friday you had a running plane and a story to tell, but I bet you didn't shake that hangar for a while.