Back in the days prior to WWII, a student pilot might expect
to have several genuine engine failures before the license
was issued. Today the engine is pretty good as long as you
put fuel in the tank and oil in the engine [cap secured].
Sometimes you read about a prop strike and they check the
run-out to see if the crank is OK. That doesn't mean the
crank isn't damaged, just that it wasn't left crooked. It
could have been bent 10 thousands left and then back to the
right 12 thou, and be within tolerance. It will break some
time. But some people won't pull the engine down and
MagnuFlux and X-ray the crank and rods because the insurance
company won't pay for it unless they find it's broken.


--
James H. Macklin
ATP,CFI,A&P

--
The people think the Constitution protects their rights;
But government sees it as an obstacle to be overcome.
some support
http://www.usdoj.gov/olc/secondamendment2.htm
See http://www.fija.org/ more about your rights and duties.


"Capt. Geoffrey Thorpe" The Sea Hawk at wow way d0t com
wrote in message
news:WrqdnUxuq4FjS7TZnZ2dnUVZ_tKdnZ2d@wideopenwest .com...
| "Jim Macklin" wrote
in message
| news:tH4Wf.1271$t22.320@dukeread08...
| Unfortunately, people make parts and people are not
perfect.
| All the companies buy parts from suppliers. Rarely a
| suppliers of parts knowingly uses weak materials or
skips
| some step to manufacture. Some times a part is not
designed
| properly and sometimes there is a error such as not
using
| the proper radius on a machine flanged.
| Lycoming and Continental build engines and buy parts.
| Everything gets inspected, all the paperwork is checked,
but
| stuff happens.
| Any manufacturer who designs and certifies a new engine
will
| have the same sort of problems, plus the technology will
be
| new and untried, so there may be problems that are
| unexpected.
|
|
| Same problem in the auto industry. The bigges difference
is that broken
| cranks or cams or... show up in the warrenty data - not in
NTSB accident
| reports.
|
|
| --
| Geoff
| The Sea Hawk at Wow Way d0t Com
| remove spaces and make the obvious substitutions to reply
by mail
| When immigration is illegal, only illegals will immigrate.
|
|