Flying on the Cheap - Instruments

To All:

Recently a fellow discovered my post about flying on the cheap (Oct
2001) and got so excited he had to give me a call. Although he
wasn't quite ready to begin building, my article convinced him to
take the plunge. As his first step toward building an inexpensive
flying machine he'd purchased the first of the instruments he
planned to install in it.

A clock. One that cost nearly $200.

I stared at the telephone for a minute then hung it up and went back to
work. In terms of flying on the cheap, two hundred bucks is enough for
a fuselage or a set of wings. Common sense is remarkably uncommon
stuff in the world of aviation.

Flying on the Cheap means VFR-Day; the epitome of fair-weather flying.
No IFR timed turns nor precision descents into the murk. And the odds
are, you already own a perfectly good clock for that kind of flying.
In fact, it's probably strapped to your wrist right now.

The same is true with regard to your altimeter. VFR-Day you can SEE
the terrain. Your only need for an altimeter is to ensure vertical
separation and avoid the bureaucratic wedding cakes and for that you
don't need a precision instrument. A cheap 2" altimeter - - the kind
from J.C.Whipme that reads fifteen thousand feet in one turn of the
dial is more than good enough.

Ditto for your Magnetic Heading Indicator, which most folks call a
compass. A good car or small boat compass, such as the adjustable
jobbie made by Sherrill, costs less than ten bucks. (*) Accuracy-wise,
once you swing the plane, remember east is least and fill out the
correction card, the Sherrill is about as good as a B-16 although its
card is marked only in ten degree increments. Most aviation compasses
are marked every five degrees but here again, we're talking Flying on
the Cheap and VFR-Day. You're not Lindy hopping the pond nor heading
for thirty seconds over Tokyo, you're slip-sliddin' your way over
to Joe's to shoot a few landings, getting in your ten hours a month
so aren't a hazard to the rest of us.

If your inexpensive home-made flying machine has a strut-braced wing
you may not even have an ASI in the panel, falling back on the simple
air speed indicator Wilbur made for the Wright 'Flyer.' (And if
you don't know what that was, you should.)

Which isn't to say that flying on the cheap means flying on the
stupid. See that fishing vest hanging on the back of the door?
That's my Flying Costume. No silk scarf nor sheep-skin jacket but it
does happen to include an inexpensive GPS unit along with a cheap
'ramp' radio. Not rock-bound; a modern, programmable 720 channel
aviation communications unit. Since flying on the cheap often means
flying without an electrical system, each unit is complete with its
battery pack and external antenna. And if you'll take a closer look
at that set of cheap Harbor Freight ear-muffs hanging by the vest
you'll see it's actually a Flying-on-the-Cheap head-set that works
jus' fine, thanks - - even though it cost me the best part of a
twenty dollar bill.

The point here is that poking around southern California under VFR-Day
conditions does not mean equipping your aircraft for a full-stop at
LAX. But neither should it preclude that possibility. Indeed, going
ANYWHERE in southern California under visual flight rules mostly means
keeping the hell out of everyone's way. That dictates the need for
good lights, good communications and knowing where you are at all
times. That's where the GPS unit comes in. It can tell me my
altitude and ground speed faster and more accurately than I can figure
it out for myself, even a whole panel full of expensive dials, an E6-B
and forty years of experience.

Alas, as soon as you mention radio and GPS it sounds as if you've
torpedoed the whole idea of flying on the cheap. But unless you live
in one of the square states, having GPS and comm capability is the
reality of General Aviaition in today's America. Not because you
need it to get where you're going; you need it to keep from becoming
a hood ornament on some Part 135 hot-rod whose arrivals and departures
from local airports has a lot in common with FEMA following a
hurricane.

Trust me here, you really do need the GPS, and once you have it you can
toss about a thousand bucks worth of steam gauges in the trash. But if
you have a seriously bad day, you'll still need to get the bird home.
That's where the car compass and altimeter comes in handy. And like
I said, you've already got a clock.

-R.S.Hoover

(*) American Science & Surplus