What is the maximum airspeed limit for open Gunner's Window?

What is the maximum airspeed limit for open Gunner's Window?

• A. 150 knots
• B. 180 knots
• C. 170 knots
• D. 160 knots

Answer: (C)

Opening the gunner's window changes the side-airflow and increases wind loads on the window and its frame. Because of those higher aerodynamic forces, there is a published maximum indicated airspeed to protect the window, its latch, and the crew from damage or injury. For the UH-60 gunner's window, that limit is 170 knots. Speeds well below that (like 150 or 160) are safe but unnecessarily restrictive, while going higher (such as 180) could overstress the window and latch. Always ensure the window is properly secured before flight and respect this limit when operating with it open.

Opening the gunner's window changes the side-airflow and increases wind loads on the window and its frame. Because of those higher aerodynamic forces, there is a published maximum indicated airspeed to protect the window, its latch, and the crew from damage or injury. For the UH-60 gunner's window, that limit is 170 knots. Speeds well below that (like 150 or 160) are safe but unnecessarily restrictive, while going higher (such as 180) could overstress the window and latch. Always ensure the window is properly secured before flight and respect this limit when operating with it open.