In-Flight Engine Failure

"O. Sami Saydjari" wrote:

Is there a way to test a crank after a prop strike to absolutely assure
that it has no micro-fractures or hidden fatigue points?

Yes. IIRC, it's called magnafluxing.

George Patterson
If you don't tell lies, you never have to remember what you said.

"G.R. Patterson III" wrote in message ...
"O. Sami Saydjari" wrote:

Is there a way to test a crank after a prop strike to absolutely assure
that it has no micro-fractures or hidden fatigue points?

Yes. IIRC, it's called magnafluxing.

George Patterson
If you don't tell lies, you never have to remember what you said.

I've wondered about this. Mangnafluxing will detect cracks. Will it
positively detect damage from a prop strike that might cause a failure
much later?

I've always been nervous about this WRT factory re-man engines. How do
you know for sure that there was never a prop strike?

Incidentally, on the subject IO-360 engine, is there an improved crank
like there is for the IO520s that has the fillet at each cheek? On the
520s, those are the 520BBs; without the improved crank, they were -B or -BA.
I know there were failures with the older design.

In the Bonanza & Baron Proficiency courses, we've flown about 80,000 hours
and have had 7 engine failures AT THE CLINICS! These aren't doggy airplanes!
It's made me much more conservative. Fortunately, only one resulted in injury.

Bill Hale