What does the red line on the airspeed indicator signify?

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Study for the Pilot's Handbook of Aeronautical Knowledge Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

What does the red line on the airspeed indicator signify?

Explanation:
The red line marks the never-exceed speed. It shows the maximum indicated airspeed you must not exceed, because going faster can impose loads on the airframe that could cause structural damage, loss of control, or flutter. Stay below this line in all conditions. In practice you’ll fly within the normal green range, and you’ll encounter caution territory in the yellow arc between the normal limit and the red line. The other limits (like landing gear down speed or minimum control speed) refer to different aircraft limits and are not indicated by this red line.

The red line marks the never-exceed speed. It shows the maximum indicated airspeed you must not exceed, because going faster can impose loads on the airframe that could cause structural damage, loss of control, or flutter. Stay below this line in all conditions. In practice you’ll fly within the normal green range, and you’ll encounter caution territory in the yellow arc between the normal limit and the red line. The other limits (like landing gear down speed or minimum control speed) refer to different aircraft limits and are not indicated by this red line.

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