What is the engine out glide speed (Vglide) for the ERJ 170/175?

• A. 125 KIAS
• B. 130 KIAS
• C. 135 KIAS
• D. 140 KIAS

Answer: (C)

The engine-out glide speed (Vglide) for the ERJ 170/175 is established to optimize the aircraft's aerodynamic performance when there is an engine failure. At Vglide, the aircraft achieves the best lift-to-drag ratio, which allows for the maximum distance to be covered while descending without engine power. For the ERJ 170/175, the correct Vglide is 135 KIAS.

This speed is critical for pilots to know, as it allows for effective management of the aircraft’s descent and maximizes the potential for reaching a suitable landing area in the event of an engine failure. Maintaining this specific glide speed ensures a controlled and efficient descent, improving safety and decision-making during such emergencies.

Knowing this value is important for flight planning and operational procedures, providing pilots with a clear and standardized reference to follow during critical flight situations.