Czech Aircraft Works (CZAW) began life in the newly
freed Czech Republic not long after the history-making
fall of the Berlin Wall in 1989. Tapping a wellspring
of aeronautical training and experience that became
available when the Soviets pulled out of the former
Czechoslovakia, American owner Chip Erwin started
CZAW in 1992. Using the highly trained but lowcost
labor force available, Erwin manufactured parts
for and assembled the CH 601 and CH 701 designs of
Chris Heintz’s Zenair Ltd. The young company found
a solid market in Europe for fully built CH 601s and
CH 701s. Each year it grew in size and built ever more
of the all-metal designs.
As CZAW increased its production
capability, it began to explore designs
of its own. It found success first with
its Czech Floats; many American
aircraft are fitted with this all-metal
amphibious system. Three years ago,
CZAW partnered with Sport Aircraft
Works (SAW) of Palm City, Florida,
led by Danny and Zaneta Defelici,
to pursue the development, sales,
and marketing of light-sport aircraft
(LSA). Erwin and Defelici waited to
see what the final LSA requirements
were, and then “we pulled the trigger
on development,” said Defelici.
Two years ago, CZAW introduced
its first design, the low-wing Mermaid
amphibian. I saw drawings of
the Mermaid at EAA AirVenture Oshkosh
2003; by Sun ‘n Fun 2004, the
airplane debuted. Response to the
prototype was overwhelming. Many
refundable orders were taken even as
development continued.
Next came the Parrot, a highwing,
relatively sophisticated design
that uses flush rivets, which are timeconsuming
to install, and a stretched
aluminum skin that looks terrific
but also adds labor hours. The lowwing
SportCruiser, the subject of this
month’s review, followed.
With no less than three new designs,
it’s obvious the development
team at CZAW and SAW does not proceed
on a leisurely basis. The result is
the two companies have developed
and certificated three special LSA (SLSA)
in less than two years, giving
them a veritable fleet of LSA-specific
designs to make major inroads to the
U.S. marketplace. With plans to build
“an aircraft a day,” the companies are
positioning themselves to occupy a
leading role among LSA producers.
All are American-ready designs, offering
spacious cabins. “We have three
of the largest interior volume LSA on
the market,” observed Defelici.
The SportCruiser:A Simple Design
Some have suggested the SportCruiser
is a copy of the CH 601 XL, which
is now sold as an S-LSA by American
Manufacturing and Development
(AMD) of Georgia and in kit form
by Zenith Aircraft of Mexico, Missouri.
But, CZAW’s engineers said the
SportCruiser has “no interchangeable
parts with the 601.” The SportCruiser
represents an “evolved, completely
fresh design,” said Defelici. (Zenair and CZAW recently announced termination
of their license agreement
for CZAW to build Zenair aircraft. See
Flightline, page 17)
Compared to CZAW’s Mermaid
and Parrot, the SportCruiser is a
much simpler design and, therefore,
can boast more price flexibility. This
simplified construction also accounts
for its fast development. In fact, the
SportCruiser is already in its second
generation of development, thanks
to the flexibility of the ASTM consensus
standards for LSA. The refined SportCruiser highlights a lower,
smoother line to the canopy (the first
one bubbled quite a bit higher) with
a new composite canopy frame structure.
Seats were also lowered a small
amount, and cabin width grew from
41 to almost 46 inches. Not only do
occupants have more room than in
the prototype SportCruiser I flew but
also the instrument panel space increased.
Besides SportCruiser’s roomy cabin,
including a large baggage area
plus a hat rack, the new model has a
useful load of 600 pounds. With full
fuel (30 gallons), it has more range
than the average human bladder and
can hold two 190-pound pilots and
40 pounds of baggage.
A roomy cabin must also accommodate
a tall pilot, and SportCruiser
does so with adjustable rudder pedals
rather than adjustable seats. “We had
a 6-foot, 6-inch pilot weighing 280
pounds inside,” reported Defelici. He
stressed legroom as one of the Sport-
Cruiser’s great qualities.
Naturally, that’s not all that sets
the new low-wing model apart. The
controls are another way the new
plane shines, Defelici said. When he
and I flew together at his residential
airpark, Naked Lady Ranch, the airplane
exhibited easy and forgiving
manners, with stalls so docile as to be
uneventful. “SportCruiser is basically
stall resistant because of its wingtip
design.” Defelici explained, “The
SportCruiser’s handling is a combination
of good airfoil and a wingtip design
that came from a French study
done in the 1970s that showed this
tip configuration was one of the most
efficient, even more efficient than
traditional STOL-type droop tips.”
And you can land the SportCruiser
in a short space given its lowest operating
speed of 30 mph. Slow speeds
dramatically reduce energy in the
event of an upset. The SportCruiser’s
low-speed flying characteristics and
its thicker wing, which equates to
slower flying overall, makes it appropriate
for lower-time pilots.
Let’s Go Cruising
The SportCruiser’s cabin features a
forward-opening canopy that locks
via a dual side latch, with a center
handle between the seats. Entry, via
stepping up on the wing, is aided by
a steel step that helps you step over
the flaps. A handhold is built into
the glare shield to assist entry, as
does a strong “T handle” between the
seats-more so than the seat back.
“We listened to people’s comments at
air shows,” Defelici said about these
entry accommodations.
Dual control sticks with the throttle
mounted on a center console
make the SportCruiser a viable trainer,
and the nearly 46-inch wide cabin
means folks won’t be cramped. Fourpoint
seat belts hold you securely in
the side-by-side seats.
Once seated, you adjust the pedals
for your height (remember, the seats
don’t adjust).
Taxiing for takeoff means using
differential brakes to pivot a castering
nose wheel. While the nose gear
is 4130 steel, the main gear is built
of composite legs inserted into a
box. The good news about this system
is that you can spin around in
a tiny space once you become adept
with the brakes and castering movement.
For takeoff, set one notch of
flaps; an electric motor deploys the
surface 10 degrees. Lesser flap angle
deployments are possible because of
the efficient Fowler flap system. Even
on Naked Lady Ranch’s turf runways,
the SportCruiser left the ground energetically.
The factory states 420
feet, and I have no reason to doubt
this figure.
As with many LSA, climb is strong
given the light weight being lifted by
the potent 100-hp Rotax 912 engine.
Turns in the SportCruiser could be
done to shallow angles with no use
of rudder and without strong feelings
of slipping or skidding. “It took some
work,” said Defelici, “but the aileron
differential is just right,” referring
to the difference between aileron up
versus down angle, which is a popular
trick to achieve finer handling response
and reduce drag. “I’m a stickler
on controls,” he reported. “The prototype
SportCruiser’s control rigging
had a rather sensitive pitch response.
The ailerons were slightly heavier
than the elevator, and pitch wasn’t
slippery, but it was lighter than roll
control.” Defelici worked with the
designer to reduce these issues, proving
engineering can be aided by the
test pilot’s prowess in the final finessing
of such adjustments.
Adverse yaw in the SportCruiser
is modest; you generally won’t need
much rudder to fly the plane. Rudder
control response also received a close
eye from Defelici, and the yaw control
friendliness reflected well upon
his effort.
“Cessna 172 pilots go crazy in
many light-sport aircraft,” Defelici
said. He believes most general aviation
(GA) pilots find LSA too light in
control response. Hence, he made the
extra effort to get the SportCruiser’s
handling as predictable as possible.
Defelici may be right about the GA
pilot’s feel for controls in LSA, but
most GA pilots I’ve spoken with focus
on performance. And, the Sport-
Cruiser delivers well in this realm, yet
it also displays a demur side that newcomers
will appreciate.
I didn’t attempt spins in the Sport-
Cruiser even with a parachute on
board as the design had not undergone
such factory tests at the time of
my evaluation flight in April 2006.
Landings call for two notches or 20
degrees of flaps; a maximum deployment
of 30 degrees is available. When
you deploy flaps, the nose moves
downward a bit. When I tried a landing
without flaps, I found rotation to
be somewhat more abrupt. Using the
flaps made for smoother touchdowns
at various settings.
The SportCruiser’s flaps are effective
enough for most operations,
but if you want to make the steepest
possible approach, a deep slip can be
comfortably achieved. Defelici indicated
that doing so with full flaps creates
no control problem.
Generally I found the SportCruiser
to be a well-behaved aircraft. Even
when stalls are done fairly aggressively,
the wings don’t tend to drop,
except slightly in significantly accelerated
stalls. Despite the good behavior,
this is a new design without a lot
of field experience, so I was pleased
CZAW had installed an emergency
parachute system in the forward compartment
aft of the engine.
Most test pilots would likely say
the SportCruiser is a medium-performance
aircraft. However, in one common
measure of engineering skill, the
design can manage the magical 4-to-1 ratio from slowest to fastest speeds
(that is, the fastest speed should be
four times the slowest). To me the
real magic is this airplane flies slowly
well, probably inheriting some of
this prowess from its older sibling,
the Mermaid amphibian, which uses
a slower speed wing to make water
operations more efficient. Getting off
the water quickly is a prime objective
for floatplanes, and short ground runs
are an attribute of the SportCruiser.
Calling the SportCruiser a “medium
performer” is hardly accurate,
though. The design can maintain
125 mph (109 knots), which is only
11 knots below the LSA maximum
allowed speed at continuous power
(120 knots). Never exceed speed (VNE)
is a generous 160 mph, almost 30 percent
beyond normal cruise, yielding
a wide safety margin for over speed
situations.
The SportCruiser also has a “huge
weight and balance envelope,” Defelici
added, making its sensitivity to
aft center of gravity conditions low.
Weight and balance planning is always
paramount, of course.
A Cruiser of Your Own?
After a strong response to the Sport-
Cruiser at EAA AirVenture Oshkosh
2006, it would appear the marketplace
thinks the low-wing, all-metal
LSA is a winner. Several orders were
reportedly finalized, and Defelici indicated
the first four SportCruisers
would be delivered by early fall. By
the end of the year, CZAW and SAW
think they can deliver around 40 aircraft.
Defelici said, “We are setting up
the factory to produce one aircraft a
day.” New, larger quarters for CZAW
will help the company meet that ambitious
production plan.
The standard base price for the
SportCruiser is $74,500, which includes
shipping to Florida and five
hours of flight orientation with a
flight instructor. Twenty hours of
sport pilot training are included in
the price of the aircraft for those
needing a pilot certificate.
For those seeking a lower-priced
aircraft, SAW will sell you an amateur-
built (51-percent) quick-build
kit starting at $35,500 less engine.
You can elect a Rotax 912S 100-hp
engine or the Jabiru 3300 120-hp, but
ask SAW for the latest engine price as
they vary depending on exchange
rate fluctuations. Under sport pilot
you cannot use an amateur-built aircraft
for compensated instruction or
rental, but if that’s not your goal, you
can have a lot of fun building and
save yourself thousands of dollars.
Kit prices do not include shipping
from the Czech Republic.
Other pilots may prefer more
equipment on board, and SAW is
ready to please, offering a feature-laden
SportCruiser for $87,195. Besides
its Rotax 912ULS 100-hp powerplant,
the deluxe SportCruiser includes:
Garmin GPS 296 color map with AirGizmo docking station
Full glass panel Dynon EFIS/EMS with analog backup gauges and fuel flow
King 97A VHF radio
Garmin GTX 320 transponder with altitude encoder
Standard instruments: airspeed, altimeter, tachometer, oil pressure, oil temp, cylinder head temp, and Hobbs hour meter
PS Engineering PM 3000 intercom
Three-blade Woodcomp ground-adjustable propeller with spinner
ELT with remote display controls plus two antennas
30-gallon wing tanks with gauges
Trim and radio transmit controls on pilot control stick
Electric aileron and pitch trim with position indicators
Electric flaps with position indicator
Four-point seat belt harnesses
Cabin heat | Wheelpants
Two-tone paint with accent trim stripes and matching upholstery
Corrosion protection
If you want more options, plenty
are available: parking brake ($275),
a night lighting package ($1,900),
leather interior upgrade ($950), metallic
paint upgrade ($1,350), and
a BRS soft-pack parachute system
($4,995). This list does not reflect
every potential option; contact
SAW for its up-to-date price sheet.
“We’re in full compliance with
the ASTM standards,” said Defelici,
and the SportCruiser is
ready to buy and fly for $75,000
to $90,000. To some pilots that
may sound like a lot, but general
aviation pilots perceive a bargain.
The SuperCruiser’s sales would indicate
that it’s off to a great start
with American consumers.
Seating | 2, side-by-side |
Empty weight | 720 pounds 1 |
Gross weight | 1,320 pounds |
Wingspan | 28 feet 11 inches |
Wing area | 131.3 square feet |
Wing loading | 10.1 pounds per square foot |
Useful Load | 600 pounds 1 |
Length | 23 feet 4 inches |
Payload (with full fuel) | 420 pounds 1 |
Cabin Interior | 45-plus inches wide |
Height | 6 feet 10 inches |
Fuel Capacity | 30 gallons |
Baggage area | 10.6 cubic feet, 40 pounds 2 |
Airworthiness | Certified SLSA |
Notes: | 1 Figures do not take into account the standard airframe parachute 2 Can accommodate more weight with careful weight & balance calculation, according to factory. If weight and balance will accommodate, 40 lbs. can be placed in each wing locker for a total of 120 pounds. |
Standard engine | Rotax 912ULS |
Prop Diameter | Woodcomp 3-blade |
Power | 100 hp |
Power loading | 13.2 pounds/hp |
Cruise speed | 113 kts/130 mph |
Stall Speed (Flaps) | 34 kts/39 mph |
Stall Speed | 42 kts/48 mph |
Never exceed speed | 139 kts/160 mph |
Rate of climb at gross | 980 fpm |
Takeoff distance at gross | 420 feet |
Landing distance at gross | 480 feet |
Range (powered) | 6.7 hours/800 miles (No Reserve) |
Fuel Consumption | 4.5 gph |
Standard Features | Avionics: Dynon D100 primary flight display, Garmin GPS 496, a single Garmin SL40 radio, and GTX 328 transponder; BRS parachute; 3-blade Woodcomp ground-adjustable propeller with spinner; ELT; intercom; leather seats; 30- gallon wing fuel tanks; trim and radio transmit controls on pilot control stick; electric aileron and pitch trim with position indicators; electric flaps with position indicator; 4-point seatbelt harnesses ; cabin heat; wheel pants; 2- tone paint with accent trim stripes and matching upholstery |
Options | Second Dynon display; Dynon three-element autopilot; Garmin 695; paint options. Contact Piper for additional items added as deliveries begin. |
Construction | Aluminum airframe, hydroformed aluminum wing ribs, all-aluminum wings and tail; composite cowling and other components. Made in the Czech Republic by a Czech-owned company; distributed by Piper Aircraft in the USA (Piper is majority owned by Singapore-based company). |
Design
Cosmetic appearance, structural integrity, achievement of design goals, effectiveness of aerodynamics, ergonomics.
Pros – Proven LSA design now represented by a
legacy general aviation company. Certified in March
2006 (#18), the SportCruiser – now PiperSport –
enjoyed success in flight schools. Since its introduction,
numerous improvements have been made. Factory has
pursued a third-party audit by LAMA.
Cons – Company manufacturing the PiperSport
(Czech Sport Aircraft) went through a difficult transition
in 2009 and some owners still have questions.
Piper Aircraft is not manufacturing the PiperSport;
they are only a distributor.
Systems
Subsystems available to pilot such as: Flaps; Fuel sources; Electric start; In-air restart; Brakes; Engine controls; Navigations; Radio; (items covered may be optional).
Pros – Standard model well equipped by Piper;
commonly optional systems (e.g., parachute) make a
good value for base price. Electric trim and flaps. Dual
wing tanks with 30-gallon capacity. Garmin 496 GPS
is standard along with Garmin radio and transponder.
Cons – Cowling must be removed for major engine
access.Wing fuel tanks, while often thought safer,
require more effort during fueling than single tank.
Electric flaps not as fast or certain as a mechanical
lever.
Cockpit/Cabin
Instrumentation; Ergonomics of controls; Creature comforts; (items covered may be optional).
Pros – During evolution, cockpit widened to spacious
45+ inches. Standard leather seats appreciated
by most buyers, positively affecting resale. Pedal distance
adjusts; can fit good range of occupant sizes.
Assuming weight and balance, baggage area is unusually
generous with additional wing lockers. Four-point
seat restraint.
Cons – Entry to (any) low-wing airplane can present
challenges for some potential buyers. Bubble
canopies can get hot in warmer climates, less easily
ventilated during taxi. No separate seat adjustment.
Seat angles may not please everyone.
Ground Handling
Taxi visibility; Steering; Turn radius; Shock absorption; Stance/Stability; Braking.
Pros – Differential braking augments castoring
nosewheel for good ramp maneuverability. Excellent
traffic visibility through quality bubble canopy. Gear
has proven up to the duty of flight training. Good
ground clearance.
Cons – Not all pilots like castoring nosewheel
steering, possibly affecting resale. Ventilation during
ground operations may require leaving canopy party
open. Bubble canopy opening must be handled carefully
in strong winds.
Takeoff/Landing
Qualities; Efficiency; Ease; Comparative values.
Pros – Fast takeoff with short ground roll and
enthusiastic climb rates (more than 1,200 fpm off the
runway observed) make for a great short- or soft-field
performer. Visibility is excellent during all takeoff and
landing operations. Can approach quite slowly. Flaps
easily deployed; slips work effectively.
Cons – Electric flaps take somewhat longer to
deploy than mechanical. Though previously flown on
floats, low wings aren’t preferred for such operations.
Cannot observe main gear during touchdown.
Control
Quality and quantity for: Coordination; Authority; Pressures; Response; and Coupling.
Pros – Excellent handling qualities, even at very
slow flying speeds where ailerons remain quite effective.
Dutch rolls went well, quickly attesting to easily
learned handling. Adverse yaw is low; not much rudder
is needed.
Cons – Some pilots have observed mild disharmony
between controls; pitch is on light side of average
while aileron inputs are slightly higher. Steeply
banked turns tighten up without modest high-siding.
Performance
Climb; Glide; Sink; Cruise/stall/max speeds; Endurance; Range; Maneuverability.
Pros – Spirited climb rate right off runway and
well sustained to medium altitudes evaluated. Good
cruise speed, competitive with others in Piper’s line.
Great range on 30 gallons of fuel; lower fuel burn than
any other Piper aircraft. Superb low-speed flight (with
responsive handling).
Cons – A handful of other SLSA may be faster; the
PiperSport uses a thicker wing section (which helps it
fly slowly very well, even if it may take a few knots off
the top). Glide also not as strong as a few other brands
(though most folks will find glide more than adequate).
Stability
Stall recovery and characteristics; Dampening; Spiral stability; Adverse yaw qualities.
Pros – Very benign stall characteristics in all
regimes. Very slow stall speeds; can aid short- or offfield
landings. Longitudinal stability is excellent.
Response to power change is as expected. Piper elected
to provide airframe parachute as standard in all models
(a substantial added benefit buyers often appreciate).
Cons – Test aircraft exhibited a slight pull to left
at cruise (probably an adjustment on this one aircraft).
Roll-out forces from steep turns required firmer stick
movement. No other stability negatives.
Overall
Addresses the questions: “Will a buyer get what he/she expects to buy, and did the designer/builder achieve the chosen goal?”
Pros – Manufactured in Czech Republic, design
was originated by American ownership. Even in new
field of LSA, the SportCruiser/PiperSport has established
itself with a good record and generally satisfied
customers. Earlier SportCruiser dealers are welcomed
into Piper’s distribution plans; some offer good expertise
in make and model.
Cons – Price increased with new representation
compared to many sold by former manufacturer/distributor.
Some uncertainties remain among prior customers
regarding new Czech ownership (though Piper
should help put these to rest). Piper will have to manage
a long-distance supplier relationship.
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