S4 aircraft

Cleared Direct Oct 3, 2026

Joby Aviation's S Four, the Six-Rotor Electric Air Taxi from Santa Cruz, and the FAA Certification Marathon Nobody Warned Them About

Joby Aviation's S4 six-rotor electric air taxi leads all eVTOL developers in flight test hours and holds FAA Stage 5 noise certification, with type certification expected between 2025 and 2027.

Vector

Cleared Direct Apr 20, 2026

Joby Aviation's S4 and the five-year marathon to FAA type certification

Joby Aviation's S4 is the closest eVTOL aircraft to FAA type certification, with over 85% of compliance documentation complete and 1,000+ test flights logged.

Vector