A rugged, deluxe 2-place trainer and cross country Beaver RX550 has a 10.7 m wingspan, Rotax 503 47 hp engine and weighs 150 kgs. Both aircraft feature fibre¬glass pilot fairing and windscreen as standard equipment.
In 1993, ASAP began providing parts and service for the existing Beaver RX550, RX28 and RX35 all aircraft manufactured by a company no longer operating. The demand to continue offering the Beaver aircraft as a kit was high and so in 1996 ASAP introduced the new Beaver RX 550 Plus with new wings, new tail, stronger shock system, better performance but still keeping with its famous docile easy flight of the original Beaver.
The prototype of the Beaver Plus first flew in 1995.

The kit price in 1998 was Can$9000.

Beaver
Engine: Rotax 277, 28 hp
Propeller diameter and pitch 50 x 28 inch, 1.27 x 0.71 m
Reduction ratio 2.0/1
Max static thrust 190 lb, 86 kg
Length overall 15. 0 ft, 4.57 m
Height overall 5.8ft, 1.75m
Wing span 33.0ft, 10.06m
Contant chord 5.3ft, 1.63m
Dihedral 2 deg
Sweepback 5 deg
Tailplane span 8.0ft, 2.44m
Fin height 4.8ft, 1.45m
Total wing area 158 sq.ft, 14.7 sq.m
Wing aspect ratio 6.9/1
Wheel track 4.7ft, 1.42m
Nosewheel dia¬meter overall 11 inch, 27cm
Main wheels diameter overall 11 inch, 27cm
Optional floats, dimensions: 10.0 ft, 3.05 m long
Power per unit area 0.18hp/sq.ft, 1.9hp/sq.m
Fuel capacity 2.8 US gal, 2.3 Imp gal, 10.4 litre
Empty weight 232 lb, 105 kg
Max level speed 55 mph, 88 kph
Never exceed speed 62 mph, 100 kph
Max cruising speed 55 mph, 88 kph
Economic cruising speed 30 mph, 48 kph
Stalling speed 24 mph, 39 kph
Max climb rate at sea level 600ft/min, 3.0m/s
Min sink rate 300 ft/min at 30 mph, 1.5 m/s at 48 kph
Best glide ratio with power off 11/1 at 35mph, 56kph
Take off distance 100ft, 30m
Land¬ing distance 125ft, 38m
Service ceiling 13,000ft, 3960m
Range at average cruising speed 40 mile, 64km

RX-550
Engine: Rotax 503
Empty wt: 375 lb
Max wt: 800 lb
Wing span: 35ft
Wing area: 170 sq.ft.
Wing loading: 4.3 lbs/sq.ft
Power loading: 17.4 lbs/hp
Max speed: 80 mph
Cruise: 58 mph
Stall: 30 mph
Vne: 80 mph
Seats: 2

Engine: Rotax 582, 65 hp
Speed max: 80 mph
Cruise: 65 mph
Range: 120 sm
Stall: 38 mph
ROC: 800 fpm
Take-off dist: 400 ft
Landing dist: 450 ft
Service ceiling: 13,000 ft
HP range: 64-75
Fuel cap: 7 USG
Weight empty: 450 lb
Gross: 1100 lbs
Height: 7 ft
Length: 21 ft
Wing span: 35 ft
Wing area: 164 sq.ft
Seats: 2
Landing gear: nose wheel

Beaver Plus
An upgraded version of the RX-550.
Engine: Rotax 582, 65 hp
Engine range: 50-65 hp
Empty wt: 430 lbs
MTOW: 1050 lb
Wingspan: 32 ft
Length: 20.8 ft
Wing area: 154.5 sq.ft
Fuel cap: 10 USG
Cruise: 73 mph
Stall: 37 mph
Range: 230 sm
ROC: 230 fpm
Seats: 2 tandem

ASAP Beaver RX-550 Plus
Engine: Rotax 582, 65 hp
Engine range: 64-75 hp
Empty wt: 450 lb
MTOW: 1050 lb
Wingspan: 35 ft
Length: 21 ft
Wing area: 164 sq.ft
Height: 7 ft
Fuel cap: 9 USG
Max speed: 95 mph
Cruise: 75 mph
Stall: 38 mph
Range: 120 sm
ROC: 800 fpm
TO dist: 400 ft
Ldg dist: 450 ft
Service ceiling: 13,000 ft
Seats: 2 tandem

Engine: Rotax 503, 50 hp
Propeller: 2 or 3 blade Wooden or Composite
Diameter: 68″
Vne: 105 mph
Length: 20 ft 8 in
Height: 6 ft 8 in
Wing Span: 32 ft
Wing Area: 154.5 sqft
Seats: Tandem
Empty Weight: 430 lb
Gross Weight: 1050 lb
Fuel Capacity: 10 USG
Design Load Factors: +4/-2G
Top Level Speed: 75 mph
Cruise Speed: 65 mph
Power Off Stall Speed: 37 mph
Rate of Climb: 900 fpm
Take of Distance: 250 ft.
Service Ceiling: 15,000 ft.

Engine: Rotax 582, 65 hp
Propeller: 2 or 3 blade Wooden or Composite
Diameter: 68″
Length: 20 ft 8 in
Height: 6 ft 8 in
Wing Span: 32 ft
Wing Area: 154.5 sqft
Seats: Tandem
Empty Weight: 430 lb
Gross Weight: 1050 lb
Fuel Capacity: 10 USG
Design Load Factors: +4/-2G
Vne: 105 mph
Top Level Speed: 85 mph
Cruise Speed: 73 mph
Power Off Stall Speed: 37 mph
Rate of Climb: 1050 fpm
Take of Distance: 200 ft.
Service Ceiling: 15, 000 ft.

Single seat single engined high wing monoplane with conventional three axis control. Wing has swept back leading and trailing edges, and constant chord; conventional tail. Pitch control by elevator on tail; yaw control by fin mounted rudder; roll control by three-quarter span ailerons; control inputs through stick for pitch/roll and pedals for yaw. Wing braced from below by struts; wing profile double surface. Undercarriage has three wheels in tricycle formation; bungee suspension on all wheels. Push right go right nosewheel steering connected to yaw control. No brakes. Aluminium tube framework, with optional pod or full enclosure. Engine mounted at wing height driving pusher propeller.

Since a prototype, the aircraft has been changed considerably. It features almost full span ailerons of 10.0 ft (3.05 m) length, which should give very powerful roll control. Another change has been the inclusion of an optional pod, which can be extended as a further option to become a full cockpit enclosure, rather in the manner of a Birdman Chinook.

Spectrum says that the Beaver takes 30 hr to assemble from kit. Construction is of double surface, strut braced, high wing with aluminium spars and ribs. Stressed to + 7.5 G’s and – 3 G’s. Mylar reinforced leading edge for smooth air flow. Conventional 3-axis controls, centre mounted joy stick, rudder pedals, tricycle undercarriage (with castering nosewheel) and tail skid. Independent shock absorbers give excellent rough field capabilities.

In 1993, ASAP began providing parts and service for the existing Beaver RX550, RX28 and RX35 all aircraft manufactured by a company no longer operating. The demand to continue offering the Beaver aircraft as a kit was high and so in 1996 ASAP introduced the new Beaver RX 550 Plus with new wings, new tail, stronger shock system, better performance but still keeping with its famous docile easy flight of the original Beaver.
The ASAP Single seat Beaver SS standard kit includes: Beaver SS Airframe, Rotax 447 Engine – 40 hp pull-start, Engine accessories, Basic Instrument Package (EGT, CHT, RPM, Airspeed), GSC – 2 blade, 60″ TECH2 prop (ground adjustable, wooden blades w/composite leading edge, Single colour primer and paint package (Endura, 2 part catalyzed polyurethane), Ceconite covering material and edge tape, 3M Latex adhesive, Azusa Tires, nose wheel brakes.

The Beaver SS offers a high useful load with a maximum gross take-off weight of 650 pounds and a typical empty weight of 340 pounds, the Beaver offers more than 300 pounds of useful load. The Beaver SS has a newly designed and cleaner wing, and full span ailerons. Pre-cut, pre-drilled components combined with a modern Assembly Manual (light on cad drawings, heavy on photos) makes for easy assembly even for first time builders.

Cenconite fabric is attached to the structure using a 3M, water-based latex glue before being “shrunk to fit” with a simple home iron. The standard kit includes an educational video to show how. The Beaver kit even includes a high end, catylized polyurethane primer and paint package by Endura incorporating UV protection, flex agent, and instructions. The Standard Beaver SS kit includes everything needed to assemble the aircraft. Everything is jig drilled at the factory with all of the difficult work done.

Complete kit includes airframe, engine, engine accessories, 3 Bld GA prop, paint package, front brake, standard wheels, upright engine mount, instruments steerable nosewheel, ceconite fabric, adapts to floats and skis. Price 2009: US$13150

The Beaver SS first flew in 2000. In 2007 10 were built.

ASAP marketed in kit form the Beaver RX-550 tandem two-seat microlight (as a variant of Spectrum Beaver RX-550), the Beaver RX-28 two-seat training model, and the Chinook Plus 2 tandem two-seat microlight.

Engine: Rotax 277 (268cc) 28 hp
Static thrust: 210 lb
Prop: 127cm x 71 cm pitch
Empty wt: 252 lb
Max wt: 524 lb
Wing span: 31ft
Wing area: 148 sq.ft
Height: 5’8”
Length: 17’8”
Fuel cap: 5 USG
Construction: Aluminium: Dacron
Wing loading: 3.54 lbs/sq.ft
Power loading: 18.71 lbs/hp
Max speed: 72 mph
Cruise: 50 mph
Stall: 24 mph
Vne: 75 mph
Climb rate: 800 fpm @ 50 mph
Design limits: +7.5, -3g
Glide ratio: 8-1
Seats: 1

Beaver SS
Engine: Rotax 447, 40 hp
Engine range: 40-50 hp
Empty wt: 340 lbs
MTOW: 650 lb
Wingspan: 31 ft
Length: 17.6 ft
Wing area: 138 sq.ft
Fuel cap: 5 USG
Cruise: 67 mph
Stall: 30 mph
ROC: 800 fpm
Seats: 1
To dist: 90 ft
Ldg dist: 65 ft
Cockpit width: 39 inch

Aircraft Sales and Parts Ltd (ASAP)
Beaver SS-single place
Stall: 26 kt / 30 mph / 48 kmh
Cruise: 58 kt / 67 mph / 108 kmh
VNE: 78 kt / 90 mph / 145 kmh
Empty Weight: 154 kg / 340 lbs
MTOW Weight: 295 kg / 650 lbs
Climb Ratio: 850 ft/min / 4 m/s
Glide Ratio: 7:1
Take-off distance (50ft obstacle): 90 ft / 27 m
Landing distance (50ft obstacle): 75 ft / 23 m

First flown in May 1997.

Top speed: 170 mph
Cruise: 140 mph
Stall: 54 mph
Range: 546 sm
Engine: Subaru EA81, 118 hp
Fuel capacity: 22 USG
Empty weight: 900 lb
Gross weight: 1600 lb
Height: 10 ft
Length: 16.5 ft
Wing span: 34 ft
Wing area: 147 sq.ft
Seats: 2
Landing gear: nose wheel