Hermeus Clears FAA Hurdle for Supersonic Flight Testing
Event summary
- FAA granted Hermeus' Quarterhorse Mk 2.1 a Special Airworthiness Certificate – Experimental Category (SAC-EC) on March 12, 2026.
- Certification followed a year of collaboration between Hermeus and FAA for aircraft development and testing.
- Quarterhorse Mk 2.1 is the largest and most capable aircraft in Hermeus' development program to date.
- Flight testing is ongoing at Spaceport America in New Mexico within White Sands Missile Range airspace.
The big picture
Hermeus' certification marks a critical step in advancing supersonic flight technology, aligning with broader industry trends toward faster aerospace innovation. The company's rapid prototyping methodology contrasts with traditional development cycles, potentially offering a competitive edge in both commercial and defense applications. The strategic partnership with the Department of War underscores the national security implications of high-speed flight capabilities.
What we're watching
- Technical Milestones
- The pace at which Hermeus achieves supersonic flight will determine the credibility of its rapid prototyping approach.
- Regulatory Dynamics
- How the FAA's oversight evolves could impact the timeline and cost of Hermeus' development program.
- Market Positioning
- Whether Hermeus can sustain its lead in high-speed flight technology against potential competitors.