What is the maximum angle of intercept for course intercepts?

The maximum angle of intercept for course intercepts is correctly identified as 90 degrees. This is based on how intercepting courses typically function in aviation navigation. When intercepting a course, a pilot must maintain the ability to effectively align their aircraft with the intended flight path. At an angle greater than 90 degrees, the efficiency of the intercept diminishes significantly as the aircraft would then essentially be flying away from the desired course.

At 90 degrees, the intercepting aircraft can achieve a direct path to the desired course, allowing for effective course correction and optimal navigation. It is a standard practice in aviation to use this maximum angle, as it balances the need for efficient navigation with operational safety considerations.

The other angles provided do not align with the principles of effective course intercepts in instrumental flying. For instance, angles such as 120 degrees would pose challenges due to the aircraft needing to make more extensive corrections and possibly complicating the approach to the desired flight path. Hence, 90 degrees remains the safe limit for effective intercept strategies.