In March 2025, the E20 eVTOL successfully concluded its structural validation campaign. The test was executed in full accordance with airworthiness requirements, encompassing critical design scenarios including: ground operations, flight maneuvers, gust loads, and system failure conditions.

To ensure design substantiation, the engineering team conducted flight phase-specific loads covering takeoff profile, transition corridor, and cruise configuration. Through critical case downselection methodology, the most severe load combinations from hundreds of candidate cases were identified for physical testing.

The structural test article employed synchronized multi-axis servo-hydraulic loading rigs with dozens independent actuators to achieve six-degree-of-freedom load simulation. Hundreds strain gauge rosettes were strategically positioned at primary load path intersections, enabling real-time structural response monitoring. Test-to-analysis correlation demonstrated less than 3% deviation.

This campaign confirms that the E20 eVTOL meets high safety and reliability standards for structural integrity. It is a key step toward airworthiness certification and commercial use. Having accumulated over 600 flight test sorties, TCab Tech has gained valuable experience and data, setting the stage for the upcoming manned flight trials.