Potatora wrote:

The flashing lights enhance visibility.


Well, duh, I guess the would. But why would visibility need to be
enhanced? It was unlimited already, not a cloud in the sky. Why have I
never seen any other airliner doing that?
/snip/

No, he means that the flashing enhances the visibility of the aircraft
to others in the area. The human eye picks up on movement/change much
faster than on something in a steady state. While this type of landing
light feature is a common add-on to smaller aircraft, it is, for some
reason, fairly un-common on large aircraft.

Happy Flying!
Scott Skylane