That brings us to the maverick
builder—I’ll call him Mel—who wishes
to bolt a Ford 302 to his Skyscreamer.
It’s much less expensive than a
Lycoming O-360, and he already has
one in the back of his garage. Some
lead in the tail will balance the extra
weight of the engine, gear reduction,
and radiator. The problem with this is
the highly regarded Skyscreamer was
not engineered for that engine, and
adding lead to balance the airplane is
one bad decision following another.
Empty weight increases, but Mel
refuses to give up useful load so he
arbitrarily “increases” his gross weight
so he can still carry his 230-pound
friend. But changing a number on
the registration paperwork doesn’t
make the spar, landing gear, or tail
stronger, nor has the airfoil changed
to provide the same safe stall and
flight characteristics the Skyscreamer
is famous for. But Mel anticipated his
stall speed would increase (he’s smart
that way) and added vortex generators
and root cuffs to his wings.
This is where our privilege to
experiment butts heads with our
responsibility. When that aircraft
has an incident, the FAA and
National Transportation Safety
Board (NTSB) paperwork will show
that a Skyscreamer came apart in
flight. The Internet chat groups will
go crazy with speculation. Current
Skyscreamer owners will question the
strength of their spar. Skyscreamer
Ltd. will put tremendous effort into
finding out what happened, confident
in its fully engineered product yet
very concerned by the incident. It
is a responsible company. That’s
what responsible companies do. And
when the facts reveal that particular
aircraft was heavy, an un-approved
engine was installed, and the wing
was modified, there will be some
relief in the Skyscreamer community,
yet there will still be two fatalities, a
widow, and a Skyscreamer accident in
the NTSB database.
Or maybe that won’t be the end of
the fallout. Maybe the few insurance
companies that write policies for
experimental aircraft will take a long,
hard look at the Skyscreamer and
decide they don’t want to insure them
anymore. Insurance companies are in
business to make money, and they
don’t make money paying claims. Now
everyone who has a Skyscreamer—
completed or under construction—as
well as those who have been dreaming
of building a Skyscreamer, has another
hurdle to jump. Or perhaps they
simply have a large pile of 2024-T3, in
the form of airplane parts, to recycle.
Mel should have looked for another
design that more closely met his
needs. Or he should have taken the
full challenge and designed his own
airplane. At the very least he should
have certificated it as the Mel Special,
sparing the good reputation of the
Skyscreamer company. With privilege
comes responsibility.
Back to my caller who wants a
well-built experimental airplane but
does not feel he can build it himself.
True, not everyone possesses the
skills necessary to build an airplane,
but I believe if you have the desire
and choose the correct design for
you, the necessary skills can be
acquired. A timid builder can shore
up his or her skills and confidence by
taking advantage of the experienced
members of the local EAA chapter, the
various SportAir and design-specific
workshops, and frequent visits from
an EAA technical counselor. You
can also get help for those tasks you
simply cannot do.
And that brings us to builder
assist programs. The regulations
prohibit hiring someone to build an
experimental category aircraft for
you; the construction of an amateur-built aircraft is for educational and
recreational purposes, and hiring
someone to build an airplane for you
is neither. At least 51 percent of your
airplane must be amateur-built.
Experimental amateur-built category
aircraft designers and builders have
been granted tremendous privileges
that allow us to attempt rubber band-powered flight or build a proven
design and enjoy a flavor of flight not
offered by Wichita. Let’s all—designer,
manufacturer, builder, owner—act
responsibly to protect these privileges
so those who do not share our passion
for homegrown aviation have no
reason to restrict it.
Kerry Fores handles technical support for
Sonex Aircraft LLC.