Aero-Tips!
A good pilot is always learning -- how many times have you heard
this old standard throughout your flying career? There is no truer
statement in all of flying (well, with the possible exception of
"there are no old, bold pilots.")
Aero-News has called upon the expertise of Thomas P. Turner,
master CFI and all-around-good-guy, to bring our readers -- and us
-- daily tips to improve our skills as aviators. Some of them, you
may have heard before... but for each of us, there will also be
something we might never have considered before, or something that
didn't "stick" the way it should have the first time we memorized
it for the practical test.
Look for our daily Aero-Tips segments, coming each day to you
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Aero-Tips 11.20.06
I've owned two airplanes -- a Cessna 120 (for about seven years)
and co-ownership of a Beech Sierra (for six weeks -- a story for
another day). Obviously there were many differences between
the two. One difference was the ability to preflight the
engine.
The Cessna's cowling was held with two sturdy latches on each
side. Simply twist two key-type latches and the entire cowling half
swung up and over the top, exposing the entire engine for preflight
inspection. I can't tell you how many times I pulled small bird
nests from the engine, dry straw that could block cooling air flow
and cause an engine overheat, and in a worse-case scenario catch
fire in flight and bring down the airplane. There were also cold
winter days, during the time I was forced to store the Cessna
outdoors, when I scooped handfuls of snow from the aft engine
compartment, snow that would have blocked air flow before engine
heat melted it off, and possibly entered the carburetor, strangling
the engine.
By contrast the Sierra's cowling was similar to most lightplane
designs. There is a small door to reach the oil dipstick and oil
filler, but for streamlining and engine cooling the cowl itself is
firmly sealed, requiring significant effort to open up the engine
compartment for inspection. For the short time I had possession I
had to store the Sierra outside as well. During one preflight
inspection I could not see any birds-nest material looking through
either the oil door or the nose inlets.
As I walked around the airplane, however, I saw a small bird fly
from the outlet underneath the rear cowling. Laying down on the
ground and looking up through the underside of the engine I found a
huge mass of straw and twigs-a bird's nest-that had been
"installed" overnight. After pulling the cowling and completely
cleaning out the hazard I vowed to make plugs to close off all
cowling openings when the airplane is stored. I would have, too, if
I'd been able to stay in the partnership.
Aero-tip of the day: Thoroughly inspect the
engine compartment for foreign matter before every flight. In most
airplanes this means lying on the ground and looking with a
flashlight through any openings on the underside of the engine.