Originally Posted by
rickair7777
In 121 this applies for precision approaches, and most non-precision approaches.
But each airline's OPSPECs are different, and many specify certain situations where both vis AND cig are limiting for commencing an approach. This is airline-specific and you don't need to know the details for an interview.
Very true when you're talking about commencing the approach...to actually land though, the flight visibility takes precedence every time because those are actual conditions, not forecast or reported. 91 or 121.