Checklists

[AEROBAT]

Too many people use carb heat when it is detrimental to the engine

I have to ask, how is carb heat "detrimental to the engine" during the reduced-power descent during base and final? What permanent damage does it cause to the engine internals?

I can see carb heat while taxiing being a bad idea if there's lots of junk lying around, because it bypasses the engine filter.

And carb heat on takeoff reduces power, so that's not good, but hardly "detrimental to the engine". I've never heard of an engine detonating on takeoff due to carb heat - not likely with 100LL - in fact I know of some aircraft types with the little Continentals that recommend the use of carb heat on takeoff!

BTW, never locked my keys in the car, if that's what you're getting at.

Lots of religion here.

like to have full oil

Ok, but you're going to be down on horsepower due to crankcase windage, and it's just going to be tossed overboard and grease up the belly until it gets down to the windage level.

Hey.. if you want your engine sucking unfiltered air on days when there is zero chance of carb ice go for it! There is a reason they put air filters on engines. Mooney had one model that has a filter by-pass door. It gave another inch of MP in cruise. They recomended not to by-pass the air filter below 5000'

[straightpilot]

if you want your engine sucking unfiltered air (in flight)

Never heard of an accident caused by an engine "sucking unfiltered air". Can you dig up even ONE aircraft accident report for which "unfiltered air" was named as the culprit?

Plenty of aircraft accidents have resulted from carburetor icing.

I even know of a serious aircraft accident which resulted from the engine injesting the air filter. If that aircraft didn't have an air filter, it wouldn't have been destroyed, and the pilot wouldn't have been seriously injured. I'm sure he was glad he had an air filter.

[AEROBAT]

if you want your engine sucking unfiltered air (in flight)

Never heard of an accident caused by an engine "sucking unfiltered air". Can you dig up even ONE aircraft accident report for which "unfiltered air" was named as the culprit?

Plenty of aircraft accidents have resulted from carburetor icing.

I even know of a serious aircraft accident which resulted from the engine injesting the air filter. If that aircraft didn't have an air filter, it wouldn't have been destroyed, and the pilot wouldn't have been seriously injured. I'm sure he was glad he had an air filter.

Using your logic we might just as well toss all the air filters from piston engine planes I guess

[straightpilot]

Your camshaft in your Lycoming will rust out from disuse long before your cylinders are abraded by the silicon you fear so greatly.

Reviewing this thread, it would appear that the over-use of checklists in the past would have appeared to have achieved success in that it has helped many marginal aviators obtain their pilot licences, that otherwise would have been unable to.

[AEROBAT]

Your camshaft in your Lycoming will rust out from disuse long before your cylinders are abraded by the silicon you fear so greatly.

Reviewing this thread, it would appear that the over-use of checklists in the past would have appeared to have achieved success in that it has helped many marginal aviators obtain their pilot licences, that otherwise would have been unable to.

And you also get dummies who pull on carb heat during hot dry weather because they were taught the at the "Monkey See Monkey Do" flight school.

[straightpilot]

It's a good thing no one in Canada runs mogas in aircraft engines, because TP10737:

http://www.tc.gc.ca/publications/EN/TP1 ... 10737e.pdf

says in Section 3.2 about carb icing:

... likely to occur at HIGHER AMBIENT TEMPERATURES and LOWER HUMIDITY with mogas. In other words, conditions under which a pilot may feel there is only a slight risk for icing with Avgas may in fact be ideal for the formation of ice when using more volatile Mogas.

No one should look at Appendix D of TP10737 because it shows that carb icing can occur with mogas at temperatures up to +38C.

Yeah, only dummies use carb heat, because it destroys the engine