In RTO procedures, which condition applies when speed is above 80 knots?

• A. < 80 knots: Any malfunction excluding status messages
• B. > 80 knots: Engine fire, failure, AC unsafe and/or unable to fly, loss of directional control
• C. Both
• D. Neither

Answer: (B)

Aborting a takeoff is about stopping safely when continuing would be more dangerous than stopping, and the decision criteria depend on how fast the aircraft is moving. Once you’re above a certain speed, the types of malfunctions that justify an RTO become more severe because the aircraft has less runway left to stop and the consequences of continuing could be catastrophic.

When speed is above 80 knots, the conditions that warrant an RTO are engine fire, engine failure, the aircraft being unsafe to fly and/or unable to fly, or a loss of directional control. Any of these situations means you can’t safely continue the takeoff, so the correct action is to stop on the runway using the available braking and reverse thrust if appropriate.

The alternative describing events below 80 knots doesn’t apply to this high-speed decision point, and the other options don’t match the specified high-speed abort criteria.