In the current AOPA e-newsletter there is a link to a blog and June 17,
2009, article by Bruce Landsnerg, President of AOPA Safety Foundation.
The headline is "Engine Overhauls – Arbitrary or Necessary?"
http://blog.aopa.org/asfblog/?
p=197&WT.mc_id=090807epilot&WT.mc_sect=qzm
He asks: "When should engines be overhauled? Some believe that the
engine manufacturer’s recommendation are loose guidelines and that your
mileage may vary greatly. Others adhere to them as gospel and treat
them as mandatory. Times typically run between 1,500 and 2,500 hours
and there’s usually a calendar factor of about 12 years so the guidance
is for whatever comes first. Piston aircraft engines are extremely
reliable when properly maintained, when flown regularly and correctly.
You can see some important qualifiers creeping into the discussion.
Some of the most outspoken advocates on both sides of the argument are
extremely knowledgeable which means we best look deeper."
My "take" is that overhaul is NOT mandatory for a private
owner/operator at the 1800 hours Continental recommends, but
to safely go beyond "TBO" requires serious monitoring and risk
management techniques...check your insurance policy ;<)
Regards,
WRB
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