Sonex Phoenix Update: Final design updates & Engine options

Sonex Phoenix Development Update: Final Design Refinements

Development work on the Sonex Phoenix continues toward completion as our engineering team works through the final details of the production configuration.

While there are no major configuration changes to announce in this update, several important refinements are being incorporated into the aircraft as we continue preparing the design for production, builder assembly and future flight testing.

Fuselage & Wing Structure Refinements

Recent engineering work has focused heavily on the connection between the fuselage and wing structure.

The team has modified several fuselage attachment points and structural gussets, along with additional improvements designed to strengthen and better distribute loads through the fuselage-to-wing interface.

These changes are part of the normal design maturation process as we continue reviewing the aircraft structure, manufacturing methods and builder assembly sequence.

Our objective remains straightforward: create a structure that is strong, efficient and straightforward for homebuilders to assemble.

Tricycle Gear Development

Engineering work is also continuing on the tricycle landing gear configuration.

The Phoenix was designed from the beginning to support both conventional and tricycle landing gear configurations, and the team is now working through the details required to finalize the tricycle gear installation.

This includes evaluating the structural interface, gear geometry and surrounding fuselage components to ensure the final configuration integrates cleanly with the aircraft.

Closing In On the Production Design

At this stage of the program, much of the work is no longer about major changes to the airplane.

It is about refining the details.

These smaller details ultimately determine how well the aircraft goes together and how refined the finished kit becomes.

The Sonex Phoenix continues moving steadily toward its final production configuration, and we look forward to sharing more as engineering, production preparation and testing progress.

Build it. Fly it. Believe it.

Plans Preview: The Drawing System Description page shows builders how the Sonex Highwing plans set works.

Plans Preview: The Drawing Tree is your roadmap to the build, keeping you organized and on task.

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Sonex Phoenix Kit Pricing:

While total kit price has not changed, we have redistributed some of the Sub-Kit items to better match the arrangement of our existing Sub-Kits, including separate sale of the engine mount and cowling. See our updated kit prices below and on the Sonex Web Store.

Complete Kits:

  • Complete Airframe Kit: $41,900 (Save $2,000 by ordering the full kit compared to component only orders!)
  • Quick Build Kit: $19,900 (add to base fee)
    • Tri-Gear Option for Complete Airframe Kit or Quick Build Kit: $1,250

Sub-Kit Pricing:

  • Tail Kit: $3,450
  • Fuselage Kit: $15,900
    • Fuselage Quick Build Upgrade: $12,000
  • Wing Kit: $14,700
    • Wing Quick Build option not available separate from fuselage purchase
  • Gear & Controls Kit: $5,900
    • Tri-Gear Option for Gear & Controls Kit: $1,250
  • Engine Mount & Cowling (Std Gear): $3,550
    • Engine Mount & Cowling (Tri-Gear): $3,550
  • Kit Minus Tail Package: $38,450

 

Sonex Highwing Specifications & Performance

Subject to change without notice

Specifications
Seats 2
Length 19′ 3.5″
Wing Span* 26′ 2.4″
Wing Area* 117.9 sq. ft.
Aerobatic (2-place) Wing Span* 23′ 1.3″
Aerobatic (2-place) Wing Area* 104 sq. ft.
Tail Height (Taildragger) 61.5″
Tail Height (Tricycle Gear) 80.5″
Tail Width w/Wing Tips 92.75″
Inboard Wing Section Width 89.5″
Main Gear Width with Wheel Pants 73.75″
Air Foil 64-415
Primary Structure 6061-T6 Aluminum
Maximum Fuel Capacity 30 US Gal.
Cockpit Width (Interior) 42″
Engines (100-140 hp)
  • AeroVee
  • Jabiru 3300
  • UL Power
  • Rotax 9-series
Stall Speed (Vso) 46 mph
Design Cruise Speed (Vc) 159 mph
Maneuvering Speed (Va) 125 mph
Never Exceed Speed (Vne) 200 mph
Utility Category
Basic Empty Weight 820 lbs
Max Gross Weight 1500 lbs
Baggage (Max) 90 lbs
Useful Load (Including Fuel) 680 lbs
Wing Loading 12.7 lbs./sq. ft.
Power Loading
  • 100 hp: 15 lbs./hp.
  • 120 hp: 12.5 lbs./hp.
  • 130 hp: 11.5 lbs./hp.
Limit Load Factors +4.4 / -2.2 G
CG Limits 20-32% Wing Chord
Aerobatic Category
Basic Empty Weight 820 lbs
Max Gross Weight 1230 lbs
Baggage (Max) None
Useful Load (Including Fuel) 410 lbs
Wing Loading 11.8 lbs./sq. ft.
Power Loading
  • 100 hp: 12.3 lbs./hp.
  • 120 hp: 10.25 lbs./hp.
  • 130 hp: 9.5 lbs./hp.
Limit Load Factors +6 / -3 G
CG Limits 23-29% Wing Chord
Aerobatic Category (Limited)
Basic Empty Weight 820 lbs
Max Gross Weight 1340 lbs
Baggage (Max) 40 lbs. (or BRS installation)
Useful Load (Including Fuel) 520 lbs
Wing Loading 12.9 lbs./sq. ft.
Power Loading
  • 100 hp: 13.4 lbs./hp.
  • 120 hp: 11.2 lbs./hp.
  • 130 hp: 10.3 lbs./hp.
Limit Load Factors +5.5 / -2.5 G
CG Limits 23-29% Wing Chord

* Sonex Phoenix features easily interchangeable wing tips for different span configurations.

Sonex Phoenix is designed to take advantage of the new FAA MOSAIC rules for Light Sport Aircraft!

Specifications & Performance Subject to Change Without Notice.