Runway Overrun Awareness and Alerting System (ROAAS) from July 2026 on required

[easaman]

From 1 July 2026: Large aeroplanes *** for which the first individual certificate of airworthiness was issued on or after this date*** should be installed with a Runway Overrun Awareness and Alerting System (ROAAS) to reduce the risk of a longitudinal runway excursion during landing.


Runway Overrun Awareness and Alerting System (ROAAS)
Overview

The Runway Overrun Awareness and Alerting System (ROAAS) is an advanced avionics system designed to help pilots prevent runway overruns during landing or aborted takeoffs. It provides real-time alerts and situational awareness to reduce the risk of aircraft overshooting the runway.
How It Works

ROAAS uses aircraft performance data, runway conditions, and real-time kinematics to calculate:

Required stopping distance (based on speed, weight, braking, and runway conditions)

Available runway remaining

Risk of overrun

If the system detects a potential overrun, it issues visual and auditory alerts to prompt the pilot to take corrective action (e.g., increase braking, deploy thrust reversers, or execute a go-around).
Key Features

Predictive algorithms – Estimates stopping distance using aircraft dynamics and environmental factors.

Real-time monitoring – Continuously tracks aircraft position relative to runway end.

Pilot alerts – Clear warnings (e.g., "LONG LANDING" or "RUNWAY SHORT") to enhance decision-making.

Integration with avionics – Often works with Enhanced Ground Proximity Warning Systems (EGPWS) and Head-Up Displays (HUDs).

Benefits

✔ Reduces runway excursion risks – A major cause of aviation accidents.
✔ Enhances pilot situational awareness – Especially in poor weather or contaminated runways.
✔ Supports decision-making – Helps pilots decide whether to reject a landing or adjust braking.
Regulations & Adoption

FAA & EASA encourage ROAAS implementation, especially for commercial aircraft.

Some modern Boeing (e.g., 787) and Airbus (e.g., A350) models include ROAAS-like features.

Often part of Runway Safety Programs at major airports.

Limitations

Dependent on accurate runway data (e.g., length, surface condition).

Cannot replace pilot judgment – Still requires proper crew response.

Conclusion

ROAAS is a critical safety tool in modern aviation, helping prevent runway overruns by providing timely alerts. While not a substitute for proper pilot training, it significantly enhances operational safety.