Weird..... Again.....
A fuel selector gets left off by a sloppy preflight, start, warm up, taxi, take off .... And then we blame the fuel selector, rather than the brainiac who left it off? Sorry, I don't buy it. And since the vast majority of Caravans are flown in a commercial capacity, I don't feel too warm and fuzzy, having a guy(s) at the controls who have removed 'check the fuel selector' position from their flight ops just because 'they' always leave it on.... Most commercial aircraft are shared / operated by numerous pilots. Getting in behind someone else and not checking out how the last guy left the airplane is simply not acceptable on my books.
As for pearls of wisdom, I would suggest fooling with your fuel selector in some fashion (whether you select a different tank, go both, go off or whatever) before every flight. Not touching it at all is what killed those 'van pilots. Had they been of the school of securing their aircraft properly after every flight, they would likely still be here with us today.
There are good reasons for not selecting the off position on a fuel selector, there are no good reasons for not using correctly... Having had the distinct pleasure of getting in a turbine airplane behind someone who never used their fuel selector, i can tell you that it will likely freeze. I can also tell you that when the fuel condition lever cable shears, shutting down that engine, without a fuel selector Is going to be interesting...
But worst of all will be the time when you fly into red creek with a wise old buddy from Alaska. The parking is slopped so you will switch the fuel in the cub to off so it doesn't all drain out the downhill vent...
It will be spring, meaning the buddy hasn't flown for a couple months, but he is a solid commercial guy who doesn't go to pot that quick, and he Jonseing for some cub time so you'll give him the front seat. He is a cub owner as well, a high time commercial type... A pilot's pilot.... You wouldn't think twice about letting him fly your plane, so your not likely to watch over him much...
Your a gracious host, and realize spring afternoons at red creek probably yield DA's that are foreign to him, so you don't comment when he tries to kill you wallowing out of ground effect with almost enough speed to fly... Of course he's an overall sharp pilot and lowers the nose, and the Mesa drops off ahead with room to spare before the mountains.
And then it will happen... 40' AGL, off the end of the strip, and over the river, mountain ahead and the engine quits.... You both know the sound, been through the routine, and meet up at the selector....
He feels bad for not checking it, you feel bad for not telling him, or checking it...bad feelings all around and then big laughs. Guaranteed to be an NTSB report for guys who don't log the same amount of hours in the year.... Guaranteed...
Blanket statements and flying never worked good for me, but to each his own... Don't ever want to turn off your fuel selector? That's cool too... But check it Every time.... Even if you need a clothes pin to remind you
