Let'sgoflying!
Touchdown! Greaser!
600gt sandpaper? I have flown many a/c with paint jobs rougher than that, lol.
Maybe you meant 120gt or coarser?
Not saying you should ignore that frost - or any frost. I don't.
It wasn't always that way.
In my first 5 years of flying (Great Lakes winters like dtuuri, but Canadian side) there was not the concern about frost, we were never given any ACs about frost, we all used our own judgment and what we believed to be common sense (not saying that is adequate, this is just my history of it).
No hangars, all a/c were kept outside, very few had wing covers. There were tons of morning flights and I have participated in, or witnessed, hours of brooming, scraping, yes hot water (don't immediately dismiss that one), hot water in trash bags held on the wing, glove-wiping, polishing. (Rare were the days we had any sun, or enough to rely on that to melt frost, snow, or ice.) If we wanted to fly, there was always going to be some contamination even after an hour of hard work.
The airplanes I was involved with were all thick-wing ie Cessna 100 series, many other 4-seat factory built metal or fabric planes.
I know many flew with more than just frost and many dismissed the contamination because it was smooth and symmetrical and likely because it was 'fine last time' (there's a 'gotcha' attitude)
Then, there were some accidents thought to be attributed to frost, and I think some lab testing done to prove the loss of lift.
So, to get zero accidents from frost, we now must have zero frost.
It's a pilot requirement....and I think not a ridiculous one. We probably have a frost prediction website somewhere now, so you can tell if you will need that $100 out of town hangar tonight!
Maybe you meant 120gt or coarser?
Not saying you should ignore that frost - or any frost. I don't.
It wasn't always that way.
In my first 5 years of flying (Great Lakes winters like dtuuri, but Canadian side) there was not the concern about frost, we were never given any ACs about frost, we all used our own judgment and what we believed to be common sense (not saying that is adequate, this is just my history of it).
No hangars, all a/c were kept outside, very few had wing covers. There were tons of morning flights and I have participated in, or witnessed, hours of brooming, scraping, yes hot water (don't immediately dismiss that one), hot water in trash bags held on the wing, glove-wiping, polishing. (Rare were the days we had any sun, or enough to rely on that to melt frost, snow, or ice.) If we wanted to fly, there was always going to be some contamination even after an hour of hard work.
The airplanes I was involved with were all thick-wing ie Cessna 100 series, many other 4-seat factory built metal or fabric planes.
I know many flew with more than just frost and many dismissed the contamination because it was smooth and symmetrical and likely because it was 'fine last time' (there's a 'gotcha' attitude)
Then, there were some accidents thought to be attributed to frost, and I think some lab testing done to prove the loss of lift.
So, to get zero accidents from frost, we now must have zero frost.
It's a pilot requirement....and I think not a ridiculous one. We probably have a frost prediction website somewhere now, so you can tell if you will need that $100 out of town hangar tonight!
