Ernest Gann Said....

wanttaja

wanttaja

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Ron Wanttaja
"Rule books are paper. They will not cushion a sudden meeting of stone and metal." (Fate is the Hunter)

Was reminded of this on reading this accident report....

"Postaccident examination of the engine revealed the oil filler cap was not secured to the oil filler neck. The pilot said this was the first flight after the oil had been changed by a maintenance facility. He did not check the oil filler cap before the flight because it was not required per the Federal Aviation Administration (FAA) approved preflight inspection checklist."

(CEN14CA106)

Ron Wanttaja
 
SkyDog58 said:
Hmmmm. I guess the engine oil filler cap and dipstick weren't the same.
Click to expand...

On a lot of airplanes they aren't the same. With the exception of the radial 670, all the Continental engines I've operated had separate dipsticks and filler caps.
 
Could be an engine with no dip stick at all. Just a sight glass.
 
wanttaja said:
"Rule books are paper. They will not cushion a sudden meeting of stone and metal." (Fate is the Hunter)

Was reminded of this on reading this accident report....

"Postaccident examination of the engine revealed the oil filler cap was not secured to the oil filler neck. The pilot said this was the first flight after the oil had been changed by a maintenance facility. He did not check the oil filler cap before the flight because it was not required per the Federal Aviation Administration (FAA) approved preflight inspection checklist."

(CEN14CA106)

Ron Wanttaja
Click to expand...
As far as the "trial" is likely to go, he's probably off the hook. The guy who did the oil change has some splainin to do. And the deep pockets, FAA and manufacturer, may be gettin out the ol' checkbook.
 
luvflyin said:
As far as the "trial" is likely to go, he's probably off the hook. The guy who did the oil change has some splainin to do. And the deep pockets, FAA and manufacturer, may be gettin out the ol' checkbook.
Click to expand...
Does the checklist supercede 91.3?
 
Fearless Tower said:
On a lot of airplanes they aren't the same. With the exception of the radial 670, all the Continental engines I've operated had separate dipsticks and filler caps.
Click to expand...
O-200 and smaller all have combined dipsticks and caps.

Ron Wanttaja
 
just something I found out, on small bore continental's .it is not a good idea to "upgrade" the old cork filler gasket with the red rubber like ones,as they stay slippery and a slight vibration can move them and woops! anyone know were I can get a few of the old cork ones? I am using a one and half inch cut of of a bike tire tube, like a rubber ban to stop movement works well but is a pain in a.. . working on getting a stc:eek:
 
hotprops said:
just something I found out, on small bore continental's .it is not a good idea to "upgrade" the old cork filler gasket with the red rubber like ones,as they stay slippery and a slight vibration can move them and woops! anyone know were I can get a few of the old cork ones? I am using a one and half inch cut of of a bike tire tube, like a rubber ban to stop movement works well but is a pain in a.. . working on getting a stc:eek:
Click to expand...
Auto supply stores have cork gasket material.
 
So here is a question for the group: what makes some engines puke out the oil is the cap is not on, while others don't lose any oil?

I once had a moment of stupidity and managed to takeoff in a Stearman without having the oil cap secured. Without realizing it, I actually flew an hour without the oil cap on, but didn't lose any noticeable oil out of the filler neck.
 
Fearless Tower said:
So here is a question for the group: what makes some engines puke out the oil is the cap is not on, while others don't lose any oil?

I once had a moment of stupidity and managed to takeoff in a Stearman without having the oil cap secured. Without realizing it, I actually flew an hour without the oil cap on, but didn't lose any noticeable oil out of the filler neck.
Click to expand...
Difference between a tank and a wet sump?
 
Fearless Tower said:
So here is a question for the group: what makes some engines puke out the oil is the cap is not on, while others don't lose any oil?

I once had a moment of stupidity and managed to takeoff in a Stearman without having the oil cap secured. Without realizing it, I actually flew an hour without the oil cap on, but didn't lose any noticeable oil out of the filler neck.
Click to expand...

From first hand experience. Depending on how the angle is cut on the breather tube, it can create suction pulling air through an engine IF you leave the dipstick out. Imagine a reverse bevel, with the hole in the breather facing away from the relative wind. Now, leave the oil cap off. Air flows from higher pressure at the cap to low pressure at the breather tube. You know all of that splash lubrication - the mist and droplets? They get pulled into the breather and go overboard.

Moral of the story - the bevel of the breather should face into the relative wind to apply a slight amount of backpressure to the crankcase. Oh, and be sure to keep the oil cap or dipstick installed...
 
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