This article is based on an official press release from Skyryse.

Skyryse Completes Historic First Flight of Black Hawk Helicopters with SkyOS

On December 22, 2025, California-based aviation technology company Skyryse successfully completed the first flight of a Sikorsky UH-60 Black Hawk helicopter equipped with its universal flight operating system, SkyOS. The flight, conducted at the company’s headquarters in El Segundo, marks a significant milestone in the modernization of legacy rotary-wing aircraft.

According to the company’s announcement, the flight demonstrated the ability to retrofit a military-grade utility helicopter with simplified, fly-by-wire automation in just 91 days. The modified aircraft replaces the complex array of traditional mechanical controls, such as the cyclic, collective, and anti-torque pedals, with a single four-axis control stick and a touchscreen interface.

Skyryse aims to use this technology to standardize flight controls across different airframes, potentially reducing pilot workload and training requirements while enhancing Safety through automated envelope protection.

Redefining the Cockpit Interface

The core of this achievement is the integration of SkyOS, which Skyryse describes as the “world’s first universal operating system for flight.” In the demonstration flight, Skyryse Test Pilot Eric Stierna utilized the system to perform automated takeoff, hover, and landing maneuvers.

The company reports that the traditional mechanical linkages inside the Black Hawk were removed and replaced with a triply-redundant fly-by-wire system. This architecture is designed to meet “10^-9” (one in a billion) failure probability standards, ensuring high reliability. The new interface allows pilots to execute critical phases of flight, such as lifting off or setting down, with simple “swipe” gestures on a touchscreen.

“I swiped my finger and climbed into a completely stable hover… I swiped again and descended into a perfect setdown.”

, Eric Stierna, Skyryse Test Pilot

By utilizing a single four-axis stick, the system manages the complex mixing of flight controls automatically. This contrasts sharply with traditional helicopter operation, which requires the pilot to coordinate four limbs simultaneously to maintain stability.

Strategic Implications for Defense and Civil Aviation

The rapid integration timeline, completed in roughly three months, suggests a scalable model for upgrading existing fleets. Skyryse has established a Cooperative Research and Development Agreement (CRADA) with the U.S. Army to evaluate the technology for its fleet of over 2,400 Black Hawks.

The technology transforms the Black Hawk into an “optionally piloted” vehicle (OPV). According to Skyryse, this capability allows the Army to conduct missions with a traditional crew, a single pilot, or zero pilots for high-risk scenarios such as resupply or extraction in contested environments.

AirPro News Analysis

The successful demonstration of SkyOS on a heavy-lift Military-Aircraft platform like the Black Hawk represents a potential paradigm shift for fleet modernization. Traditionally, achieving fly-by-wire capabilities and high-level autonomy required purchasing entirely new airframes, a process that takes decades and billions of dollars in procurement.

If Skyryse can validate the safety and reliability of its 91-day retrofit cycle at scale, it offers defense operators a cost-effective alternative: upgrading legacy airframes to near-peer technological status with modern platforms. Furthermore, the simplification of controls could drastically lower the cost and duration of rotary-wing pilot training, addressing ongoing personnel shortages in both military and commercial sectors.

Commercial Partnerships and Safety Features

Beyond military applications, Skyryse is targeting the civil sector through a partnership with Ace Aeronautics, a major reseller and upgrader of Black Hawk helicopters. The collaboration aims to offer SkyOS-equipped aircraft for global markets, including aerial firefighting, search and rescue, and humanitarian aid.

A key feature of the system is “Dynamic Envelope Protection.” SkyOS continuously monitors flight parameters to prevent the aircraft from entering unsafe states, such as stalling or entering a vortex ring state, common causes of fatal accidents in traditional helicopters. Mark Groden, CEO and Founder of Skyryse, emphasized the transformative nature of the technology in the company’s press statement.

“The Black Hawk is one of the most proven, versatile aircraft in history… Black Hawk with SkyOS is a fundamentally different aircraft in its capabilities, flexibility, and safety.”

, Mark Groden, CEO of Skyryse

Founded in 2016, Skyryse has raised over $290 million from Investments including Fidelity, Venrock, and Bill Ford. The company previously achieved the first automated autorotation in a helicopter and is currently pursuing Certification for “Skyryse One,” a modified Robinson R66 utilizing the same underlying technology.

Frequently Asked Questions

What is SkyOS?

SkyOS is a universal flight operating system designed to be aircraft-agnostic. It replaces complex mechanical flight controls with a simplified fly-by-wire interface, using a single stick and touchscreens to control the aircraft.

Is the SkyOS Black Hawk fully autonomous?

The system enables the aircraft to be “optionally piloted.” It can be flown by a human pilot using simplified controls, or it can operate autonomously (zero pilots) for specific missions, depending on the configuration and requirements.

How long did the retrofit take?

Skyryse reported that the retrofit of the Sikorsky UH-60 Black Hawk was completed in 91 days.

Sources: Skyryse Official Press Release