Joby S4 (UAE Operations)

About

The Joby S4 is the all-electric, piloted eVTOL air taxi developed by Joby Aviation of Santa Cruz, California. The aircraft has six tilting propellers, four lithium-ion battery packs, and is designed to carry one pilot and four passengers. Joby's published cruise speed is up to 200 mph (≈320 km/h) and the company's published range figure is 150 miles (≈241 km) on a single charge. The S4 is the only aircraft authorised under Joby's exclusive Dubai operating agreement with the Roads and Transport Authority (RTA).

In UAE service, the S4 is being operated under a parallel-track regulatory pathway: a General Civil Aviation Authority (GCAA) qualification programme for the aircraft, alongside Joby's GCAA Air Operator Certificate application (Letter of Intent submitted 9 September 2024). The GCAA Director-General has stated publicly that air-taxi certification is targeted for completion by Q3 2026. In parallel, Joby is in the final stages of FAA Type Certification under Part 21.17(b) for the powered-lift category; the first FAA-conforming aircraft began power-on testing in Marina, California on 5 November 2025.

Key facts

Timeline

1. 2024-02-11
   Joby and RTA Dubai sign 6-year exclusive air taxi agreement at the World Governments Summit; S4 designated as the operating aircraft. [joby-ir-87-2024-02-11]
2. 2024-09-09
   Joby submits Letter of Intent for an Air Operator Certificate to the GCAA; AOC application accepted by GCAA Director-General H.E. Saif Mohammed Al Suwaidi. [joby-ir-106-2024-09-09]
3. 2025-06-30
   Joby delivers its first S4 to the UAE and conducts the first piloted vertical-takeoff-and-landing wingborne flights in Dubai. Witnessed by H.E. Mattar Al Tayer, Director-General, RTA. [joby-ir-132-2025-06-30]
4. 2025-summer
   21 piloted S4 flights performed in the UAE as part of an environmental and operations test campaign, with full vertical-to-wingborne-to-vertical transitions. [joby-ir-164-2025-12-15]
5. 2025-11-05
   First FAA-conforming S4 (registration N547JX) begins power-on testing in Marina, California — final stage of FAA Type Certification process. [joby-ir-156-2025-11-05]
6. 2025-11-09
   First piloted point-to-point eVTOL air taxi flight in the UAE: Margham → Al Maktoum International Airport (DWC), 17 minutes. Aircraft entered controlled airspace and pilots communicated with ATC. [joby-ir-162-2025-11-17]
7. 2025-11-17
   Joby flies daily S4 demonstration flights at Dubai Airshow 2025 (17–21 November); the only eVTOL to fly during the show. [joby-ir-164-2025-12-15]
8. 2026
   Joby and RTA target commercial passenger service launch in Dubai. DXB vertiport completion previously stated for Q1 2026. [joby-ir-162-2025-11-17]

Practical info

Regulatory status

The Joby S4 is being qualified for UAE service under two parallel tracks. Joby submitted a Letter of Intent for an Air Operator Certificate to the General Civil Aviation Authority (GCAA) on 9 September 2024, beginning a five-stage AOC process. In parallel, the GCAA is running an aircraft qualification programme distinct from FAA Type Certification, working with Joby alongside the RTA, the Dubai Civil Aviation Authority (DCAA) and Dubai Air Navigation Services (DANS). The GCAA Director-General has publicly stated that air-taxi certification is targeted for completion by Q3 2026.

In the United States, the S4 is in Stage 4 of the FAA's five-stage Type Certification process for the powered-lift category under Part 21.17(b). The first FAA-conforming aircraft, registration N547JX, began power-on testing in Marina, California on 5 November 2025; Type Inspection Authorization (TIA) flight testing with FAA pilots is targeted for 2026.

Current progress

Joby's UAE flight test campaign through the end of 2025 comprised 21 piloted S4 flights at Margham over the summer (full transitions, vertical-to-wingborne-to-vertical), the 9 November 2025 piloted Margham → DWC point-to-point flight (17 minutes), and daily S4 demonstration flights during Dubai Airshow 2025 (17–21 November). Joby has stated that passenger-carrying flights in the UAE under the GCAA qualification programme are possible in advance of full FAA Type Certification, but no UAE passenger service date has been published. The targeted commercial launch remains 2026; Joby has not published a specific month.

Connected entities

Frequently asked questions

Sources

1. [joby-ir-87-2024-02-11] Joby Aviation IR — 'Joby to Launch Air Taxi Service in UAE' (11 Feb 2024) operator-ir · accessed 2026-05-01
2. [joby-ir-106-2024-09-09] Joby Aviation IR — 'Joby Applies to Become First Certified Electric Air Taxi Operator in UAE' (9 Sep 2024) operator-ir · accessed 2026-05-01
3. [joby-ir-132-2025-06-30] Joby Aviation IR — 'Joby Cements Global Lead in Air Taxi Industry with Dubai Flights' (30 Jun 2025) operator-ir · accessed 2026-05-01
4. [joby-ir-155-2025-10-31] Joby Aviation IR — 'Joby Adds to the History of Propeller Blade Manufacturing in Dayton, Ohio' (31 Oct 2025) operator-ir · accessed 2026-05-01
5. [joby-ir-156-2025-11-05] Joby Aviation IR — 'Joby Begins Power-On Testing of First Conforming Aircraft, Enters Final Stage of Type Certification Process' (5 Nov 2025) operator-ir · accessed 2026-05-01
6. [joby-ir-162-2025-11-17] Joby Aviation IR — 'Dubai Air Taxi Network Takes Flight: Joby Completes Landmark Flight and Announces Next Vertiport Locations' (17 Nov 2025) operator-ir · accessed 2026-05-01
7. [joby-ir-164-2025-12-15] Joby Aviation IR — 'Joby Caps Year of Flight, Demonstrating Global Commercial Readiness and Operational Momentum Towards FAA Certification' (15 Dec 2025) operator-ir · accessed 2026-05-01
8. [joby-ir-38-2022-05-10] Joby Aviation IR — 'Joby Confirms Low Noise Footprint Following NASA Testing' (10 May 2022) operator-ir · accessed 2026-05-01
9. [gdmo-rta-2025-11-16] Government of Dubai Media Office / RTA — 'RTA and Joby Complete First Crewed eVTOL Aerial Taxi Flight Between Margham and Al Maktoum International Airport' (16 Nov 2025) official-news · accessed 2026-05-01

Verification flags

• MTOW and empty weight not published in any reviewed Joby primary press release — left out of specs.
• Joby has not stated a specific number of S4 aircraft in UAE service; statements through Dec 2025 refer to 'the aircraft' (singular).
• Specific 2026 service launch month not published by Joby or RTA — only the year 2026.
• GCAA qualification programme exemption / authorisation document text not published.
• Wikimedia Commons file 'Joby_Aviation_S4_experimental_eVTOL_aircraft_at_Edwards_AFB.jpg' exists in Category:Joby_S4 (USAF, public domain) but the canonical upload.wikimedia.org/wikipedia/commons/... direct binary URL could not be verified within session — hero_image set to null pending direct file-page check.
• Range figure: Joby's published design figure is 150 miles (~241 km) per IR #38 (May 2022) — figures circulating on third-party EV databases at '160 km' or '100 miles' are not from Joby primary sources and are not used.
• Noise figure: Joby publishes 'below 65 dBA' for takeoff/landing at 100 m and '45.2 dBA' for cruise at 500 m — no Joby primary release publishes a '60 dB' figure.