Runaway Overrun – ROAAS

Position 16POS05 8 September 2016 Runway Overrun Awareness and Alerting System (ROAAS)

IFALPA supports the development and installation of a Runway Overrun Awareness and Alerting System (ROAAS) in all commercial transport aircraft as a means to reduce the number of longitudinal runway excursions on landing.

CONSIDERATIONS

• While airborne, the system should timely alert the pilots with an appropriate warning if the system-calculated required landing distance (based on aircraft energy, planned landing configuration and runway condition) exceeds the landing distance available.
• After touch-down, the system should timely alert the pilots with an appropriate warning if the measured deceleration is not sufficient to bring the aircraft to a safe stop before the end of the runway.
• Warnings issued by ROAAS should be clear and unambiguous. They should be descriptive (in case of a calculated possible overrun) or prescriptive (in case of a calculated overrun).
• Aural and visual warnings should be standardized.
• The system should be integrated with other warning systems to ensure prioritization.
• The pilots should be able to manually inhibit aural warnings in order to avoid false and/or nuisance warnings due to a faulty or incomplete database, MEL-items, local NOTAMs, etc.
• Data input by the pilots, if required, should be made via the Multifunction Control Display Unit (MCDU) or via an easily accessible dedicated ROAAS interface.
• The use of the ROAAS (when installed) should be part of both the initial and the recurrent training.
• A ROAAS should be considered as a safety net, and not as a substitute for pilot assessment of landing distance calculations nor actual braking performance monitoring.
• The operator shall develop clear and unambiguous Standard Operating Procedures and Callouts with regards to ROAAS operations.

©2016 The International Federation of Air Line Pilots’ Associations IFALPA provides this data for information only, in all cases pilots should follow their company’s guidance and procedures. In the interests of flight safety, reproduction of this publication in whole or in part is encouraged. It may not be offered of sale or used commercially. All reprints must credit IFALPA.