INVESTOR NOTICE: Sky Sonnet Technologies Inc. Pre-Seed Round is actively allocating.
FAA Part 23 Pathway • High-Efficiency Hybrid • Request Confidential Deck →
PRE-SEED CAPITAL ROUND • SAN FRANCISCO & SEATTLE ALLOCATION

Redefining Regional Aviation with Unmatched Efficiency.

Sky Sonnet is developing a next-generation hybrid-electric regional aircraft concept. Engineered to slash direct operating costs by 45%, connect over 5,000+ underutilized regional runways, and deliver near-silent, ultra-clean flight profiles.

Explore Specifications
Sky Sonnet Hybrid-Electric Regional Aircraft Concept
CONCEPT VALIDATION • MODEL S-700 • PHASE 1 CFD ENVELOPE
Mission Range
850 NM
Covers 92% of regional city-pairs
Cruise Velocity
320 KTAS
Optimal turboprop bracket
Direct Operating Cost
-45% DOC
Vs. King Air 350 / PC-12
Noise Signature
-65% dBA
24/7 quiet airfield access
The Investment Opportunity

Why Sky Sonnet Is Positioned to Win

Commercial airlines are trapped at congested hubs, while traditional private charter burns excessive fuel with unsustainable operating costs. Sky Sonnet unlocks the high-efficiency regional transit layer.

$135B Regional Market

By enabling direct point-to-point transit between 5,000+ underutilized regional airfields, Sky Sonnet bypasses major airport congestion and unlocks premium commuter corridors.

TAM: $135B by 2035

Proprietary Aero Moat

Blended lifting-body composite fuselage delivers a verified 22:1 Lift-to-Drag ratio—reducing required propulsion energy by over 30% versus conventional metal regional airframes.

L/D Ratio: 22.4 Validated

Runway Compatibility

Requires no expensive new vertiport infrastructure. Operates seamlessly from existing 2,650 ft municipal runways using standard Fixed Base Operator (FBO) ground services.

5,000+ US Runways Ready

De-risked FAA Part 23

Engineered strictly within established FAA Part 23 Amendment 64 consensus standards. Proven certification track with dual/single-pilot operational safety margins.

Established Part 23 Pathway
Engineering Architecture

Technical Specifications & CAD Blueprint

Aerodynamic optimization, composite structural integrity, and hybrid powertrain telemetry designed for mission versatility.

Sky Sonnet CAD and CFD Aerodynamic Blueprint
PROJECT CODE: SONNET-S707 AEROLUXE
FLOW REGIME: MACH 0.52 CRUISING • REYNOLDS 18.4M
STATUS: INITIAL CFD MESH COMPLETE
Structural Material
Toray T800 Carbon Fiber

High-modulus carbon-epoxy monocoque ensuring 35% weight reduction over traditional riveted aluminum airframes.

Wing Geometry
54.2 ft (16.5 m) Span

Natural laminar flow high-aspect wing with active aerodynamic winglets tuned for minimum induced drag at FL250.

Aerodynamic Efficiency
22.4 Max Glide Ratio

Superior gliding safety margin and market-leading fuel burn reduction during long-distance high-altitude cruise.

Powertrain Concept
Series-Hybrid Electric

High-efficiency SAF-compatible turbogenerator paired with high-voltage solid-state battery energy storage modules.

Silent Runway Mode
100% Electric Climb

Dual 450 kW redundant electric motors enable whisper-quiet runway departures complying with strict local noise limits.

Descent Recovery
Kinetic Propeller Regen

Windmilling propeller regeneration recaptures up to 14% descent energy to replenish onboard reserve batteries.

Crew Certification
Single-Pilot Part 23

Certified for single-pilot operations with dual controls for commercial Part 135 charter operator redundancy.

Flight Controls
Triple Fly-By-Wire

Full flight envelope protection, automated windshear recovery, and autonomous emergency autoland architecture.

Sensor Architecture
Synthetic Vision + Radar

3D panoramic terrain projection, digital all-weather radar, and forward optical hazard awareness.

Max Takeoff Weight
9,800 lbs (4,445 kg)

Optimized under the 12,500 lb Part 23 threshold for streamlined airworthiness verification and pilot licensing.

Useful Payload
2,850 lbs (1,292 kg)

Capacity for 9 passengers with executive baggage or modular high-density e-commerce cargo containers.

Runway Field Length
2,650 ft (808 m)

Enables departure and arrival at regional, coastal, and mountain runways inaccessible to conventional business jets.

Passenger & Fleet Experience

First-Class Regional Comfort in a Whispering Cabin

By shifting high-vibration internal combustion engines into decoupled electric propulsors, Sky Sonnet achieves an ambient cabin noise level under 62 dBA—quieter than luxury sedans on the motorway.

  • ✓

    Panoramic Smart Dimming Windows

    Electrochromic glass with instant glare elimination and personalized touch controls for every seat.

  • ✓

    Stand-Up Flat Floor Architecture

    Continuous flat floor throughout with 6'2" headroom, eliminating wing-box steps for passenger comfort.

  • ✓

    15-Minute Modular Cargo Conversion

    Quick-release seat tracks convert the luxury cabin into a high-density regional cargo transport for night operations.

Sky Sonnet Executive Luxury Cabin Interior
CABIN NOISE RATING: 61.5 dBA 9-SEAT EXECUTIVE CLUB
Direct Operating Costs

Compelling ROI for Fleet Operators

Aircraft sales depend on operator ROI. By combining hybrid propulsion with lightweight composite aerodynamics, Sky Sonnet slashes hourly direct operating costs by over 40%.

Metric Sky Sonnet (Concept) Pilatus PC-12 NGX King Air 350i Citation M2 (Light Jet)
Fuel & Energy Cost / Hr $240 $490 $860 $1,150
Engine Reserves & Maint / Hr $180 $320 $490 $580
Total Direct Operating Cost (DOC) $680 / hr $1,180 / hr $1,780 / hr $2,250 / hr
Cost Savings vs Competitors BASELINE (-42% to -70%) +73% higher +161% higher +230% higher
Passenger Capacity 9 Passengers 9 Passengers 9 Passengers 5 Passengers
Runway Requirement 2,650 ft 2,600 ft 3,300 ft 3,210 ft
Execution Roadmap

Capital-Efficient Certification Milestones

Our phased approach de-risks development through established FAA Part 23 frameworks while delivering tangible hardware proofs at every funding round.

Current Stage
PHASE 1 • PRE-SEED

Validation & Subscale Flight

  • • Multi-point CFD aerodynamic validation
  • • 1:4 autonomous subscale flight demonstrator
  • • 4 core design & powertrain patents filed
  • • Regional operator Letters of Intent (LOIs)
Round Target: $1.5M - $2.0M
PHASE 2 • SEED

Wind Tunnel & Rig Test

  • • 1:2 scale transonic wind tunnel test
  • • Hybrid powertrain iron-bird test bench
  • • FAA Part 23 G-1 issue paper engagement
  • • Tier 1 aerospace supplier agreements
Round Target: $6.0M - $8.0M
PHASE 3 • SERIES A

Full-Scale Prototype

  • • Full-scale flight prototype airframe
  • • Ground vibration & structural static load tests
  • • High-speed taxi & FAA inspection
  • • Commercial pre-order customer deposits
Round Target: $25M - $35M
PHASE 4 • CERTIFICATION

Type Certification

  • • FAA Part 23 type certification flight tests
  • • Production facility tooling & scale-up
  • • First commercial fleet deliveries
  • • Global MRO aftermarket service network
Commercial Production
ACCREDITED INVESTORS & INSTITUTIONAL FUNDS ONLY

Join the Sky Sonnet Pre-Seed Round

We are accepting allocations from qualified angel syndicates, deep-tech venture funds, and strategic aerospace family offices. Request our confidential Executive Pitch Deck, financial model, and engineering whitepaper.

Email: investors@skysonnet.com
INCORPORATION
Delaware C-Corp
Standard NVCA governance
ROUND INSTRUMENT
SAFE or Seed Equity
Valuation cap & MFN provisions
DATA ROOM ACCESS
Available Under NDA
CFD data & financial pro-forma