**EASA Certifies Embraer E2 Runway Overrun Awareness and Alerting System (ROAAS)** The European Union Aviation Safety Agency (EASA) has certified the Runway Overrun Awareness and Alerting System (ROAAS) for the Embraer E-Jet E2 family, marking a significant milestone in operational safety. This approval follows earlier validation by Brazil’s ANAC and paves the way for European operators to deploy the system on E190-E2 and E195-E2 aircraft. Runway excursions remain one of the most common types of accidents in commercial aviation, often resulting from excessive landing speed, contaminated runways, tailwinds, or unstable approaches. ROAAS is designed to address precisely this risk by providing pilots with real-time predictive alerts. **How ROAAS Works** Unlike traditional pre-flight or pre-descent performance calculations, ROAAS continuously computes the aircraft’s stopping performance during the final approach and landing roll. It uses real-time data including airspeed, aircraft mass, flap configuration, braking capability, and runway conditions (dry or wet) to predict the stopping point and compare it to the available runway length. When the system detects a potential overrun, it issues clear predictive alerts both in the air and on the ground. Embraer states that ROAAS “calculates the aircraft’s landing performance and assesses its ability to stop safely within the available runway length,” generating warnings when a risk is identified. This adds an extra layer of protection beyond standard performance calculations. **Regulatory Context and Industry Impact** EASA’s certification aligns with European regulatory requirements for large transport aircraft, mandating systems that provide real-time, energy-based calculations and predictive alerts. Luís Carlos Affonso, Embraer’s Chief Technology Officer, called the certification “an important step for our E2 program, in compliance with the European authority’s mandate and on schedule.” The approval strengthens the E2’s position as one of the most advanced and safest single-aisle families available. For airlines operating E2s, ROAAS offers enhanced risk management on short runways, regional destinations with challenging weather, or airports where runway contamination is a recurring issue. It may also become a differentiator in negotiations with regulators, insurers, and airport operators. **What This Means for ATPL and ATC Students** For ATPL candidates, understanding ROAAS is directly relevant to approach planning, landing performance, and threat-and-error management. The system’s real-time alerts reinforce the importance of stabilised approach criteria and decision-making when conditions degrade. ATC students should note that ROAAS can influence pilot requests for longer runways or alternative airports, and that awareness of such systems helps in anticipating traffic flow changes during adverse weather. This certification is a practical example of how technology is being deployed to mitigate one of aviation’s most persistent safety risks.