AALTO completes 67-day continuous Zephyr stratospheric flight
AALTO's Zephyr completed 67 days, 6 hours and 52 minutes of continuous stratospheric flight, surpassing its previous 64-day endurance record.
Evidence notes
- The flight launched from AALTOPORT Kenya on 20 February 2025 and concluded on 28 April.
- Zephyr crossed the Intertropical Convergence Zone twice and navigated seven flight-information regions.
- The aircraft conducted connectivity-payload testing before transiting to Australian airspace.
Company context
AALTO designs, manufactures and operates the solar-powered Zephyr high-altitude platform for stratospheric Earth observation, government missions and communications services.