VIVAERO

HondaJet Echelon advances in testing and industrial preparation

Honda Aircraft announced last Tuesday (15) that it has completed the first wing structure for the new HondaJet Echelon test unit—a milestone preceding the program's move toward final aircraft assembly.

Larger than the HA-420 HondaJet, the business jet is scheduled to make its first flight in 2028, with type certification and initial deliveries planned for 2031.

The Echelon is being developed as a light jet featuring increased passenger capacity and sufficient range for transcontinental flights across the United States. The manufacturer also anticipates certification for single-pilot operation.

Completion of the first wing structure coincides with progress in development activities, structural testing, systems integration, and industrial preparation. According to Honda Aircraft, testing on components deemed critical to the program has already been completed.

The company also stated that the updated schedule accounts for adjustments regarding Tier 1 suppliers and ongoing aircraft development activities.

Systems integration... Honda Aircraft is continuing integration campaigns at its Integrated Test Facility, a site used to evaluate Echelon systems prior to the first flight.

The complex features an operational cockpit dedicated to integration testing. A second cockpit is currently being commissioned to evaluate aircraft systems before flight testing begins.

More than 70% of the parts required for the initial assembly were already available, according to the manufacturer. The production area for the HondaJet Echelon has also been expanded and now totals over 88,400 square feet (approximately 8,213 square meters).

Planned technologies...The HondaJet Echelon is expected to retain technologies Honda Aircraft has employed in the development of its business jets. These include the "Over-the-Wing Engine Mount" concept—where engines are mounted above the wings—as well as a composite-material fuselage and advanced avionics. The aircraft is also designed to incorporate automation and pilot-assistance features, including Auto Throttle, Emergency Autoland, Autobrake, Runway Overrun Awareness and Alerting System (ROAAS), and Advanced Steering Augmentation System (ASAS).

This suite of systems aligns with the project's objectives regarding range, fuel efficiency, operational capability, safety, and comfort.

According to Honda Aircraft, the program has garnered over 530 letters of intent from potential customers across various markets.

A Legacy Built on Innovation, Technology and Service...The FJ33®/FJ44® family began with the introduction of the simple, rugged FJ44-1A. Using elegant engineering solutions and embracing new ideas, Williams created a reliable, easy-to-maintain engine that was inexpensive to own and operate.

This two-spool turbofan engine uses two low pressure turbines to drive a fan and intermediate pressure compressor, and one high pressure turbine to drive a centrifugal compressor. More than half of the air flow bypasses the core and is remixed with the airflow in the exhaust which yields high thermal and propulsive efficiency while minimizing noise.

Engine control is provided by a dual channel Full Authority Digital Engine Control (FADEC), which reduces pilot workload by using redundant computers to optimize engine performance at all flight conditions, while monitoring engine parameters to prevent exceedances that could damage the engine.

As this engine spurred growth in light jets, the product line expanded to the current four models, improving performance and durability with each new model. More than 8,400 FJ44 engines are in service, and have accumulated over 22 million hours in flight, and the FJ33-5A, FJ44-1AP, FJ44-3, and FJ44-4 engines are currently in production.

This FJ33/FJ44 engine family enables airplane makers to grow their airplane families economically due to common installation, operation, and maintenance across models.