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Joby Aviation·US·eVTOL air-taxi

Joby S4.

Six-tilt-rotor powered-lift air taxi; FAA certification in stages four and five of five; eIPP flights began Sep 2026.

Testing

Certification: FAA type certification: three of five stages completed or substantially completed, ~75% through the fourth and progressing in the fifth (Q2 2026 10-Q); no type certificate yet

Verified 2026-09-24

Technical subsystems

  • propulsion↗

    6 electric tilt-propeller units (distributed electric propulsion); tilting rotors enable VTOL and cruise; four independent high-density lithium-ion polymer battery packs.

  • avionics↗

    Fly-by-wire with triple-redundant flight control computers; fully redundant powertrain and avionics architecture.

  • structures↗

    Carbon fiber composite airframe; 5-seat cabin (1 pilot + 4 pax).

Sourced metrics

Range (miles)
100 mi
Cruise speed (mph)
200 mph
Passenger seats
4 pax

Roadmap

Joby S4 RoadmapTODAY2026-10-112026-03First FAA-conforming aircraft begins TIA flight test…Achieved2026-09First eIPP (White House pilot program) flights, Texa…Achieved2026First passengers carried (Dubai)Planned↗↗↗
AchievedOn trackSlippedPlannedCanceled
Joby Aviation official site