REFLECTOR:Forwarded from Canards@Yahoo

[Jim Sower]

Ain't this technology wunnerful??  Sure do wish I could get something this well
designed and easy to maintain for my car (the devil made me say that)
Still pissed that I have to retard my timing (or let that timing crap lead me to an
EI)... Jim S.

Scott Derrick wrote:

> This is a forwarded message, not my airplane or forced landing..
> Scott
>
> Canard Group:
>
> Last week I had a forced landing after a rise in oil temperature.  The cause
> was apparent in retrospect.
>
> 15 hours before a local mechanic overhauled the engine because of bearing
> wear.  Inspection revealed a damaged crankshaft, so the crank was replaced
> with a
> new one.
>
> The mechanic overlooked Lycoming Service instruction 1435.  Simply put, if
> you use a fixed pitch prop, you must drill a hole (1/8 to 3/16 diameter) in
> the
> aft crankshaft plug  (aft of engine, not aft of airplane).  Failure to do
> this results in pressurization of the hollow crankshaft and eventual
> blowout of
> the (prop end) crankshaft nose plug.
>
> While cruising at 11,500 ft I noticed a 10 degree rise in oil temperature.
> As there was no explaination for this increase I began descent for a
> precautionary landing.  On retarding the throttle the oil pressure
> decreased from 60 psi
> to 30 psi.
>
> By the time I landed (6 minutes) the oil pressure was indicating zero.  There
> was no oil left in the sump, and the aft plug in the crank was obviously
> loose.
>
> I removed and dissasembled the engine and fortunately  there was no internal
> scoring, heat damage or wear.  Hopefully I will be flying soon with minimal
> inconvenience.
>
> The RV group seems to be very aware of this problem with three off airport
> landings.  I haven't seen it discussed here!  (did I miss it?) Be sure, don't
> let this happen to you!
>
> Michael  Marshall
> Cozy N89CZ  1500 hours
>
> "Those who sacrifice freedom to get security, deserve neither."
> - Benjamin Franklin
>
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--
Jim Sower ... Destiny's Plaything
Crossville, TN; Chapter 5
Long-EZ N83RT, Velocity N4095T