Does one have to have the Runway, Approach Lights in sight to request, as I can see no point other wise? Once Cleared - does one have to remain in VMC or maint. contact with above?What about aircraft separation and terrain clearance - will ATC still be required to monitor?
Folks,
A clearance for a visual approach is a specific clearance, with specific requirements and limitations.
Unfortunately, those requirements and limitation vary from country to country, and where applicable, the PIC should be thoroughly familiar with the local "rules".
The ICAO version is quite restrictive, the FAA version less so, and quite practical, unusually for Australia, the Australian visual approach is really quite flexible.
I know of no alternative, other than checking a country's AIP, to find the detail, Jeppesen is not always comprehensive on this one. As the ICAO is (to the best of my knowledge) the most restrictive, you could confine yourself to that, but it may cause delay to an arrival.
Tootle pip!!