# Hoydich Enterprises: civil mobility regulatory decision brief

**Research date: 2 October 2026. Hypothetical El Segundo / 2030 planning scenario.** Public-source feasibility research, not legal advice, an aircraft approval, a flight-certified design, a cost quote, or a securities offer. No reviewed evidence establishes that this hypothetical company has an aircraft, approvals, land rights, funding, or partners.

## Recommendation

**Build a ground-first, human-driven modular mobility product as the base business. Treat personal flight as a separately funded, gated option.** Use “modular” initially for serviceable ground subsystems and interchangeable non-flight functions. Do not make a detachable passenger flight module the commercial dependency before interface safety and regulatory treatment are demonstrated.

A defensible 2030 ambition is a validated ground product plus an evidence-backed aviation demonstrator or certification program. Routine personal flying-car sales, urban takeoffs, passenger service, range, production price and approval dates remain unproven. This ranking is an engineering/business inference from the compliance stacks below, not an agency forecast.

## Compare the three paths

| Path | Honest first product | Regulatory baseline | Main unresolved burden | 2030 planning judgment |
|---|---|---|---|---|
| Ground-first modular mobility | Human-driven ground demonstrator, then a road-classified vehicle | Determine vehicle class and applicable federal safety standards; manufacturer certification and California registration/operation requirements | Crash/occupant protection, braking/steering, battery safety, modular-interface misuse, manufacturing quality and service | Best base case; still requires validation and road compliance |
| Roadable aircraft | Airport-to-airport aircraft with a legal road mode | Road requirements **and** the appropriate aircraft certification, pilot and operating pathway; an eligible MOSAIC aircraft may merit investigation | Conflicting road/air mass, structure and packaging; transition locking, damage inspection and configuration control | Conditional niche option; do not assume takeoff from roads |
| Two-seat powered-lift | One onboard pilot plus one passenger, operated from approved sites | Evaluate **two distinct aircraft routes**: eligible MOSAIC light-sport, or Part 21 special-class type certification. Pilot, airspace, site and operating approvals remain separate | Propulsion/energy failures, transition flight, software assurance, continued airworthiness, training, noise/downwash and site access | Higher-risk R&D option; no credible launch commitment from a concept alone |

NHTSA has specifically treated a roadable aircraft intended for substantial public-road use as a motor vehicle. Federal compliance is manufacturer self-certification, not advance “DOT approval.” [NHTSA roadable-aircraft interpretation](https://www.nhtsa.gov/interpretations/06-005956as), [NHTSA certification explanation](https://www.nhtsa.gov/importing-vehicle/importation-and-certification-faqs)

An LSV/NEV route is a limited ground niche, not a highway-car substitute: California DMV describes 25 mph maximum vehicle speed and restriction from roads posted above 35 mph. Exact crossings, local routes, class and registration requirements still need review. [California DMV](https://qr.dmv.ca.gov/portal/handbook/california-driver-handbook/laws-and-rules-of-the-road-cont1/)

## Aircraft approval: preserve the 2026 distinction

### Route A: eligible personal light-sport powered-lift

MOSAIC's aircraft-certification changes took effect on 24 July 2026. Part 22 / §21.190 provides a light-sport special-airworthiness route for eligible designs; powered-lift is limited to two seats including the pilot. It relies on compliance documentation and accepted standards, not a conventional type certificate. **Light-sport aircraft certification does not confer sport-pilot powered-lift privileges.** Section 91.327 does not authorize a general passenger air-taxi business; its compensation/hire exceptions are bounded. MOSAIC makes Part 36 noise compliance voluntary for light-sport aircraft, which does not eliminate land-use or community-noise constraints. [Published MOSAIC final rule](https://www.govinfo.gov/content/pkg/FR-2025-07-24/html/2025-13972.htm)

FAA now lists accepted Part 22 standards. Critically, the July 2026 acceptance notice accepts ASTM F3840-26 **for powered-lift only at that time**, despite the standard's “Powered-Lift and Multicopter” title. A generic wingless multicopter must not be represented as automatically covered. [FAA light-sport standards](https://www.faa.gov/aircraft/gen_av/light_sport), [July 2026 acceptance notice, footnote 1](https://www.govinfo.gov/content/pkg/FR-2026-07-16/html/2026-14298.htm)

### Route B: special-class type-certificated powered-lift

FAA AC 21.17-4, issued 18 July 2025, describes type, production and airworthiness certification under §21.17(b). Its Appendix A is an acceptable means, not the only means, for certain battery-electric propeller-powered designs with no more than six passenger seats and 12,500 lb maximum gross weight. Novel features can require additional or alternate criteria. A standard airworthiness certificate requires an approved type design; production conformity and continued-airworthiness work are separate obligations. Guidance is not itself a product approval. Obtain the project-specific certification basis and current applicable policy before setting cost or schedule. [FAA AC 21.17-4](https://www.faa.gov/documentLibrary/media/Advisory_Circular/AC_21.17-4.pdf)

Do not collapse “eVTOL,” “powered-lift” and “multicopter”: powered-lift classification includes nonrotating airfoils supporting horizontal flight. The configuration drives the route.

## Pilots, operations and airspace

- **SFAR 120 is Part 194**, a ten-year pilot-training/operations framework scheduled to expire 21 January 2035. It is separate from aircraft approval. [Published powered-lift rule, §194.107](https://www.govinfo.gov/content/pkg/FR-2024-11-21/html/2024-24886.htm)
- Powered-lift uses aircraft-specific pilot type ratings. The framework covers onboard pilots, not autonomous passenger flight. Aircraft capability/equipment and pilot qualifications constrain where it can operate; performance-based provisions do not grant universal helicopter privileges. [FAA powered-lift FAQ](https://www.faa.gov/air-taxis/FAQ)
- Private personal operations and an on-demand commercial passenger service are different programs. The latter generally requires a Part 135 operator pathway and aircraft appropriate to the intended operation, plus operational approvals; an aircraft certificate alone is insufficient. [FAA Part 135 certification](https://www.faa.gov/licenses_certificates/airline_certification/135_certification), [FAA operator requirements](https://www.faa.gov/licenses_certificates/airline_certification/135_certification/general_req)
- A two-occupant personal vehicle is not a Part 103 ultralight: that regime is single-occupant sport/recreation. [FAA Part 103 description](https://www.faa.gov/media/32851)
- Experimental authorization is purpose- and limitation-specific, not routine commercial passenger permission. Verify §91.319 and the actual operating limitations before any test campaign. [MOSAIC final rule, experimental limitations](https://www.govinfo.gov/content/pkg/FR-2025-07-24/html/2025-13972.htm)
- The 2026 eIPP is not an exemption shortcut. FAA expressly says it does not bypass certification and participating aircraft must already be in the formal type-certification process. Participation has not been established for this concept. [FAA eIPP fact sheet](https://www.faa.gov/newsroom/eIPP-Announcement-Fact-Sheet.pdf)
- El Segundo's proximity to LAX requires site-specific airspace coordination, current charts, obstacle review and applicable ATC authorization. Class B access cannot be assumed; do not publish a speculative flight corridor as an approved route. [FAA airspace guidance](https://www.faa.gov/air_traffic/publications/atpubs/aim_html/chap3_section_2.html)

## California and El Segundo: aircraft approval is not site approval

FAA treats vertiports as heliports. Its current infrastructure page points to EB 105A, Parts 157/77 notifications and airspace review. EB 105A's stated reference envelope is piloted eVTOL in visual meteorological conditions up to 12,500 lb; it includes downwash/outwash protection. The FAA review is one layer, not permission to build or operate on any roof. [FAA AAM infrastructure](https://www.faa.gov/airports/new_entrants/aam_infrastructure), [EB 105A](https://www.faa.gov/airports/engineering/engineering_briefs/eb_105a_vertiports)

Caltrans generally requires a state heliport permit. Its site-approval list includes local approval, county Airport Land Use Commission action, CEQA documentation, site ownership/lease evidence and an FAA airspace determination. Exemptions are narrow and do not override federal/local requirements; the personal-use exemption concerns qualifying **unincorporated** sites, so cannot simply be assumed for El Segundo. [Caltrans heliport permitting](https://dot.ca.gov/programs/aeronautics/heliport-permits)

Before selecting land, commission parcel-level zoning, airport-compatibility, fire/building/electrical, emergency-access and environmental review. Assess cumulative noise, event frequency, operating hours, charging, downwash and community acceptance, even for electric aircraft. Caltrans must be assured of CEQA compliance before issuing relevant permits. El Segundo is updating its land-use planning, so current parcel rules must be verified. [Caltrans environmental program](https://dot.ca.gov/programs/aeronautics/airport-environmental-program), [El Segundo General Plan](https://www.elsegundo.gov/government/departments/community-development/planning-division/general-plan)

## High-level systems and evidence gates

These are proposed management gates, not a build procedure or a certification checklist approved by an authority.

1. **Mission / classification gate:** Define private-use versus commercial service, exact two-seat interpretation, road use, configuration, weather limits and candidate sites. Obtain qualified engineering/legal review and regulator engagement. Stop if the intended use does not fit the chosen approval route.
2. **Ground proof gate:** Validate user need with a non-flying mockup and controlled ground demonstrator. Review occupant protection, emergency stop, braking/steering, energy isolation, service access and module retention. No claimed road legality before evidence exists.
3. **Aviation feasibility gate:** Establish mass/energy budgets with reserves and degradation, high-level hazard analysis, independence/common-cause assessment, flight-control assurance plan, maintainability and emergency-response concept. Do not select targets by rendering aesthetics.
4. **Test-readiness gate:** An appropriately qualified team defines lawful test permissions, facility access, hazard containment, independent safety review and measurable acceptance criteria. Close critical hazards before advancing to any authorized flight activity.
5. **Approval / production gate:** Complete the chosen aircraft compliance route, traceability and quality system; verify pilot training, maintenance support, operating limitations and site permissions. For passenger service, complete its distinct operator program.
6. **Controlled entry gate:** Demonstrate reliability and service capacity within approved limitations; scale only from observed safety, demand and unit-economics evidence. A setback returns the program to the relevant gate.

Keep functional blocks separate: occupant/structure; ground propulsion/braking; aviation lift/propulsion; energy/thermal; flight controls/navigation; module interfaces; charging/service; production quality; operations/training. Shared hardware is a hypothesis requiring evidence, not automatic reuse of a road-qualified part in flight.

## Illustrative fundraising stages

**Planning architecture only: no amounts, valuations, offers, guaranteed returns or supplier quotes are asserted.** Build a bottom-up budget after scope, regulatory route, bids and test plans exist.

| Stage | Capital funds | Evidence for the next decision |
|---|---|---|
| Discovery / pre-seed | Customer research, mission definition, regulatory classification, mockups | A bounded ground use case and documented aviation route options |
| Ground validation / seed | Controlled demonstrator, safety evidence, road-compliance plan, supplier diligence | Repeatable ground performance and credible manufacturing/service assumptions |
| Aviation option tranche | Independent feasibility, regulator engagement, simulation and approved test preparation | Closed feasibility gaps, lawful test route and agreed evidence plan |
| Certification / industrialization | Chosen compliance route, qualified team, conforming hardware where required, quality and support systems | Required approvals and production-readiness evidence, not merely first flight |
| Deployment / scale | Approved sites, training, service spares, working capital and controlled expansion | Measured safety/reliability, customer demand and verified unit economics |

**Public fundraising caution:** An unrestricted public website can constitute general solicitation, which Rule 506(b) prohibits. Before publishing investment terms, an offer or a fundraising campaign, select a lawful offering route with qualified securities counsel. A disclaimer alone does not solve the issue. [SEC general-solicitation guidance](https://www.sec.gov/resources-small-businesses/capital-raising-building-blocks/general-solicitation)

**Investor-honest phrasing:** “2030 is a vision and decision horizon. Ground deployment is the base case; flight commercialization depends on technical evidence, regulatory approvals, infrastructure and financing.”

## Verification boundaries

Sources were checked on 2 October 2026. This is a baseline, not an exhaustive legal opinion or proof that any particular design qualifies. Direct eCFR retrieval failed during this research; published Federal Register text and current FAA program pages supplied primary-source verification. The current final powered-lift safety-continuum policy was not independently retrieved here, so no quantitative system-safety targets or certification-level claims are made. Reconfirm live rules, current guidance and project-specific requirements before commitments.