What is the maximum cockpit window-open speed?

What is the maximum cockpit window-open speed?

• A. 180 KIAS
• B. 200 KIAS
• C. 210 KIAS
• D. 200 kt

Answer: (B)

Opening the cockpit window in flight introduces a strong wind blast and changes in pressure around the cockpit. The window and its frame are designed to handle only certain loads, and exceeding those loads can cause failure or the window to be forced open, which is dangerous at speed. To keep this within safe limits, a maximum indicated airspeed is specified for window operation. This uses KIAS because it reflects dynamic pressure, which governs the structural loads, not ground speed. The limit is 200 KIAS, so the window should not be opened above that speed. The other options either use the wrong unit or set a value outside the safe limit.

Opening the cockpit window in flight introduces a strong wind blast and changes in pressure around the cockpit. The window and its frame are designed to handle only certain loads, and exceeding those loads can cause failure or the window to be forced open, which is dangerous at speed. To keep this within safe limits, a maximum indicated airspeed is specified for window operation. This uses KIAS because it reflects dynamic pressure, which governs the structural loads, not ground speed. The limit is 200 KIAS, so the window should not be opened above that speed. The other options either use the wrong unit or set a value outside the safe limit.