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North American's Navion
by Budd Davisson, courtesy of
www.airbum.com
When we
start talking about "fixing up" our
light plane for the new season, there
aren't a heck of a lot of types that
give us a choice between dressing them
in fatigues or civvies. There's the
Cub/L-4 and the rest of the
grasshopper series and you could
probably repaint your early King Air
as a C-12. Even the lowly Twin Bonanza
could be passed off as an L-21, if you
have a well-developed sense of humour.
There are, however, very few airplanes
tht fit the "fix-em up" category and
combine a khaki personality with
serious civilian utility. One of the
leaders in that narrow aero niche is
the North American/Ryan Navion, also
known as the L-17A, B or C.
The Navion/L-17 is
a series of extreme contradictions.
For one, it's an airplane people
either ignore completely or idolize as
some sort of flying diety. There seems
to be no in-between. I am one of the
ignoring crowd. I don't really dislike
the airplane. I just don't normally
notice it. Don't ask me why, I don't
know. The Navion just doesn't jump out
and grab me, which is a serious
mistake.
I found out just
how serious a mistake when I recently
dropped in on my good compadre Jim
Clevenger in Marion, North Carolina.
Jim lives on one of those grassy
valhallas we all know exist, but never
seem to find. He strolls out of his
house directly to his SNJ or Swift or
C-210 or...well you get the picture.
We always have a helluva good time
down there between burning up .45 ACP
and Avgas. We also spend a lot of time
hangar flying. At Marion that means
shooting the breeze about everything
with everyone who walks by. Naturally
airplanes are on the top of the
conversation list.
The "manager" of
the Marion airport is Gene Padgett.
Gene is also the quintessential
airplane trader, having owned
God-knows how many Swifts, Luscombes
and Navions. He runs in streaks and
I've never known him to have less than
two of any given airplane. When he
decides to leap on a particular type,
he leaps in waist deep. The last trip,
he was into Navions. He always start
talking about his current aeronautical
passion with, "...well, you know, it's
just a darned good old airplane." If
he owned a Custer Channel Wing, he'd
start the conversation that way. So, I
smiled when he started on his Navion
sales pitch. I nodded politely and
then remembered Gene had excellent
taste in flying machines and he knew I
wasn't going to buy anything. So, his
sales pitch had to have a modicum of
truth.
Probably the
deciding factor to get out of the
chair and leave the cool shade of the
hangar was that the Navion he kept
pointing at wasn't a Navion but an
L-17A (yes. it's actually a Navion,
but military fatigues give the plane a
more macho air). I can only remember
climbing up on a Navion once before in
my flying career No make that twice,
if you count helping extinguish a
flaming engine on one. The last two
times I didn't spend 30 seconds
looking at the airplane, so I missed a
lot of the finer points that make the
Navion what it is,
One little detail I
found immediately interesting was to
foreshadow my overall evaluation of
the airplane: The welded step that
dangles down in front of the wing is
not only made of steel, but the step
portion is of diamond pattern boiler
plate! Yep, that said as much about
the airplane as anything. Every little
piece of the airplane was built to
give service for the next several
hundred years. The canopy rails look
to be bullet-proof. Knocking on the
wing leading edge results in a dull "thunk,"
like knuckling the edge of a kitchen
sink. Sliding the canopy forward
results in a rumbling sound like
rolling a piano across a hardwood
floor. Solidity personified.
All this beef
results in an empty weight (according
to my trusty William Green
everything-about-airplanes book) of
1782 pounds. Well, the Navion
shouldn't be a featherweight. The
useful load is just short of 1000
pounds. That's impressive! Let's see,
four standard issue lard butts total
680 pounds and the 40 gallons of fuel
(20 more in aux. tanks) adds 250
pounds, which leaves 70 to 100 pounds
for baggage. No wonder the Air Force
took the little bird down off the
civilian shelf and put it to work.
A fact picked up
courtesy of Gene Padgett is that the
bird wasn't originally aimed at the
military. It was another of those
airplane-in-every-garage postwar
daydreams. Newly civilianized pilots
were supposed to gobble up the
airplanes and the sales would keep
North American's airplane plants busy.
Only it didn't happen that way.
Civilianized pilots were gobbling up
Chevrolets and getting the baby boom
started. Had it not been for the
military stepping in with their
check-book, the Navion might have
wound up right next to the Aeroflight
Streak or the McKinnon 165 as a
still-born infant of the boom that
didn't happen. The military did step
in, in a very big sort of way.
Apparently they
were looking for something a general
could climb into as a passenger and
feel as comfortable as he did in his
limo. The same general could also fly
it and not break his out-of-practice
neck. He would also have to work
awfully hard to break the airplane.
The combination must have appealed to
a general somewhere because North
American delivered over 900 airplanes
to the government before selling the
license to Ryan Aeronautical
Corporation. Ryan delivered another
158 airplanes to the government and
updated some of the earlier airplanes.
It seems North American didn't need
the work because of an airplane named
Sabre and a place called Korea.
In total,
nearly 1100 Navions were built for the
military. Another 1100 were built for
the civilian market so, by 1951, over
2200 in total had taken to the air.
Probably the most important fact about
the Navion's longevity is that about
1400 of the machines are still listed
on the civil' register as being flying
airplanes. That is a survival rate of
about 60%, which may be the highest of
any airplane ever built - . . some of
these airplanes are 40 years old.
What's the survival rate of the rest
of the class of 1947? Doubt if it's
that good.
The original
airplanes used the 205 horse
Continental E-185-3 engine with
several different propellers screwed
on the front. You'll see lots of
variations but the most common and the
one Gene had on his airplane is the
original Hartzell controllable, which
is a "variable pitch" prop. It isn't
constant speed since, at a given prop
setting. moving the throttle also
moves the rpm. If the pilot resets the
prop, he can maintain the proper
manifold pressure/rpm relationship.
The airplane got a
shot in the arm in 1951, when a geared
Lycoming was hung out front and the
horsepower rating jumped to 260.
Throughout the 1950s and early 1960s
someone was always reviving the Navion.
It got a bunch of different engines
shoehorned into the nose and even gave
up its sliding canopy when it became
the Rangemaster. Also, a dead stock
Navion is almost a rare bird since so
many of them have been modified. The
most popular mods get rid of a bunch
of bars in the canopy side glass but
there are dozens of other major
changes in the airplane as the result
of the love affair so many pilots have
with the machine. With the exception
of the canopy glass, Padgett's L-17A
replica was nearly a stock Navion.
Boarding a Navion
is a truly unique experience. I don't
know of another airplane that you
climb over the leading edge via the
aforementioned sturdy step. To steady
yourself, a handle which looks like it
should be pulling open a drawer full
of wrenches in your shop is fixed to
the upper cowl region. It really is a
straight drawer pull with no attempts
to hide or streamline the unit.
Once up on the wing
(and you are really "up;' about five
feet off the deck), the first
impression of the cockpit is that it
is a yawning pit the size of a 1000
gallon watering trough. Getting in is
a simple matter of stepping over the
sill into the broad (and we do mean
broad) area between the front and back
seats. It's almost a silly feeling . .
. walking around bolt upright in a
four place airplane isn't possible! A
short stroll between the front seats
is necessary to get to the flight
deck, where the pilot takes his seat
as if he was sitting down at a ball
park .. - all very civilized and very
different. This method is a great
arrangement, unless it happens to be
raining cats and whatever.
While climbing into
Gene's airplane and settling down into
the seat, it was impossible not to
notice the size of the instrument
panel. It was one of the very widest
I've seen in an airplane this size.
And the visibility? It's terrific!
A jab with the
throttle, a tap on the starter and the
engine cranked over and burst into
that characteristic harsh (sort of
agricultural sounding) exhaust tone.
As we taxied out to the runway, I made
a mental note as to my approximate
height above the ground because I knew
I'd have problems finding the runway
when we returned. Before dropping the
hammer. Gene explained the hydraulic
system, which is much like the
momentary systems on SNJs and early
AT-6s, except it stays on when
actuated. The system has to be
activated by pushing down on a
centrally mounted button/lever which
gives hydraulic power to retract or
extend the gear. No push, no retract.
If you throw the gear lever down
without activating the hydraulics,
nothing serious will happen since the
gear will unlock and free fall into
position.
We elected to go
with no flaps, but Gene showed me how
the book says to set them for takeoff,
should I need to know, Just twist the
control wheel all the way in one
direction, then lower the flaps to
match the aileron deflection. Great
idea! Unlocking the vernier and
pushing in gave me more noise than
acceleration at first, but then the
airplane gathered its aluminium wits
and started down the runway at a
civilized pace. As the controls felt
life was being fed into them by the
building airspeed, the control wheel
was gently loaded which obediently
lifted the nosewheel clear, letting me
run on the mains. I continued putting
a load on the wheel and the airplane
skipped once and then lifted off into
a solid. no sink climb, A quick punch
of the button and moving the gear
lever started the gear up and we were
on our way.
Gene told me to
hold 85 mph, which gave about 700-800
fpm, climb with two people and nearly
full fuel. Even at this early point in
the flight it was easy to see why so
many love the airplane . . . it has an
incredibly steady secure feeling. Put
the Navion on a speed and it stays
there. Drop a wing into a turn, and
the plane will hold the turn by
itself.
Once at altitude I
brought the power rack, completely
forgetting the prop wasn't a constant
speed. I wasn't paying much attention
to it until I noticed I was
constantly tweeking the prop control.
Then I remembered and let
everything stabilize before trying to
match the prop with the manifold
pressure. At 4000 ft MSL and 21
inches and 2100 turns, the airspeed
settled on 125 knots. Gene then said
something about ". . . does a great
barrel roll." This I ignored, although
there was some fairly noticeable
turbulence shortly thereafter that
took some unusual attitude recovery
techniques to tame.
There isn't much to
say about droning along in a Navion
except it does just that...drones
along. The Navion's roll rate is
fairly leisurely and the control
pressures are surprisingly light (like
a Beech product) and smooth, but
otherwise you could be cruising in
your '51 Packard, Honest! That's the
only comparison I can think of. No
modern four place airplane has the
size and comfort of the Navion and the
panel, although not as jukeboxy as
many pf its peers, is remarkable only
for the amount of gear you could stuff
into the broad surface. With a little
forethought and modern instruments and
avionics, this thing could be set up
like a 757 and have room left for a
glove box. And yes, it would make a
hell of an instrument platform. Gene
didn't opt for the avionics, but he
did add little arm rests on each side
of the cockpit that are perfectly
placed to rest your arm while lightly
holding the control yoke I wouldn't
have thought such a small addition
could do so much for an airplane's
cross-country comfort.
Coming
back into Marion I just dropped the
nose and let the airplane burn off
altitude while the speed built up to
150 knots or so. As we came smoking
into the pattern, all it took was
pulling the power and a tight turn to
bring us down to 100 mph so I could
get the gear out. And, yes, at first I
did forget to hit the hydraulic
button, but caught myself at the last
second.
Gear out, the
Navion didn't take much trim to hold
it and I went for half flaps on a wide
base. Turning final I stopped the
flaps just short of full and forced
myself to bring the airplane down to
70 mph which seemed unbelievably slow
for an airplane that flew so much like
a big airplane. It wasn't until we
were on short final that I realized
the Navion has the rock steady
characteristics usually associated
with much heavier airplanes. We were
obviously a little high and Gene urged
me to just drop the nose and let it
sink. This was done and the airspeed
didn't seem to know the difference
since we didn't gain 2 knots in what
should have been a 10-knot manoeuvre.
With everything hanging out, the
machine has enough drag you can get
away with that type of manoeuvre
within certain limits.
All the way into
the airport Padgett kept telling me.
"...just land it like a Skyhawk, just
land it like a Skyhawk:" What he
didn't know was I couldn't remember
the last time I landed a Skyhawk.
Drawing on dim memories of forgiving
machines which like to have energy
burned off before hitting ground
effect. I broke the glide and started
looking for the ground. Pull it, pull
it, hold it off... thunk! We had
arrived! I doubt if I've made a
first-time landing in any airplane
that was so easy. The nose was simple
to hold off, while we slowed on the
mains, and I had complete control over
everything as I let the nose come
down. Gee, if a Skyhawk is this easy
to land, it must be a sweetheart.
Like I said, it is
a serious mistake to ignore Navions.
Here is an airplane that has familiar
names like Delco Remy stamped on most
of its parts, making the airplane one
of those that relies on common sense,
not super sophistication, to support.
All of its systems
are ex-military, so they were designed
to be maintained by 19-year-old
privates who didn't want to be there
in the first place. Also, most of the
systems are so overbuilt, those same
19-year-old privates couldn't screw
them up and the 50-year-old generals
couldn't break them. If we want to
start talking about airplanes that are
a fantastic basis to start building
from, then the Navion should be one of
the first discussed. Paint it in the
most bizarre civilian scheme you can
imagine and that's okay. Or go to the
other extreme and polish the living
hell out of it, throw on a few stars
and bars, then stand back and salute
the final product. What some airplanes
are all about is building them to suit
your own taste. That's definitely what
the Navion is all about. |
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