In several Russian fighter jets (MiG29, Su 27.e.g., MiG-29, Su-27) there is a white line on the stick that matchmatches with another one on the instrument panel. Is there any reason for this?
A former flight instructor told me that it was to help pilots to recover from a spin: Whenwhen the two lines match, the stick is in the goodproper position to stop the spin.
Is it true or is there any other reason for that?