Analysis
Reliable Robotics raised new capital in an upsized Series D round, pushing the autonomous-aircraft company's valuation past the $1 billion mark, according to Business Wire and TechCrunch. The round breaks down as:
- Equity -- $90M, led by Nimble Partners, with Gideon Strategic Partners, RockCreek, Geek Ventures, Gold Hill Capital and Sparkwave Capital also participating.
- Debt -- $25M term loan from Silicon Valley Bank.
- Series D total -- $275M, up from the previously announced $160M.
- Total equity raised to date -- $380M+ since founding.
Reliable was founded by CEO Robert Rose, a former director of flight software at SpaceX who also worked at Tesla and Google, and CTO Juerg Frefel, who spent nearly a decade as a SpaceX engineer. The company has spent close to a decade building retrofit autonomy systems that install on existing aircraft rather than requiring a new airframe -- a bet that automating the Cessna 208B Grand Caravans airlines already fly is cheaper than designing autonomous planes from scratch.
“- Equity -- $90M, led by Nimble Partners, with Gideon Strategic Partners, RockCreek, Geek Ventures, Gold Hill Capital and Sparkwave Capital also participating.”
What Reliable still has to prove before it flies without a pilot
The near-term product keeps a pilot in the seat: continuous autopilot engagement handles taxiing, takeoff and landing while the pilot interacts through a touchscreen, and Rose expects FAA certification in 18 to 24 months. Moving the pilot to a ground-control station -- true pilotless operation -- is "at least three years away" by Rose's own account. In between, Reliable built its own solid-state collision-avoidance radar in-house after legacy suppliers declined the project, targeting certification by the end of 2027.
The proof point so far is modest in scale: Reliable Airlines, the first carrier certified to fly with the technology, operates six Cessna Caravans out of Albuquerque on cargo routes six days a week. That's a real commercial deployment, but it's a long way from the scaled air-cargo and regional-passenger markets the $1 billion-plus valuation is pricing in, years ahead of certification milestones that have already shifted once by the company's own account.
Reliable's closest rivals in retrofit and autonomous aviation -- Xwing, Merlin and Skyryse -- are chasing similar certification paths on their own timelines, and none has yet put a pilotless cargo aircraft into revenue service. The $25 million debt component of this round is notable precisely because it signals lenders expect Reliable's existing autopilot and radar products to generate enough predictable cash flow to service debt, rather than needing every dollar to come from dilutive equity -- a sign of confidence in near-term revenue even as the harder certification milestones remain years out.