The aircraft that actually counts

Two Joby aircraft took off within days of each other in March, and the press told the wrong one's story. The famous flight, over the Golden Gate Bridge on March 13, used a preproduction prototype — a machine Joby has been flying in some form since 2017, dressed up here for a tour tied to America's 250th anniversary. The flight that matters happened two days earlier and went almost unremarked: tail number N547JX, the first S4 built to the precise design the FAA has signed off on, lifting off a runway in Marina with no bridge in the frame.

The flight that earns the certificate had no audience; the flight that made the news was a prototype over a bridge.

The distinction is the whole point of aircraft certification. Prototypes can fly for years; only an aircraft assembled to FAA-approved drawings and inspected by the agency's representatives counts toward an actual license to carry passengers. With this flight Joby cleared Stage 4 of the FAA's five-stage process — the point where federal test pilots begin flying the aircraft themselves, 'for credit,' to verify the design holds up. No US maker of these electric vertical-takeoff craft has reached this stage before.

What the reader gets, if it works, is genuinely new transport: a five-seat aircraft that cruises at 200 mph for about 150 miles and is quiet enough that NASA's own acoustic measurements put it near 45 decibels in cruise — closer to a refrigerator's hum than a helicopter's roar. The catch is the gap between this milestone and a paying seat. Joby targets its type certificate by late 2026; independent analysts peg actual service to 2027, in Dubai first via the Uber app, then New York and Los Angeles. Stage 4 is not the finish line. But it is the first time the line is in sight from a real, production-grade machine rather than a demonstrator.