Circling below circling MDA at night.
Circling approach at night where you can see the runway lights no problem, but due darkness you cannot see the ground ahead or below you. You have no idea the position of the controlling obstacle(s).
The AIP states you can commence descent on downwind leg (below the published circling MDA) in order to meet the desired descent profile for the aircraft type. Under the night conditions above, isn't that a bit dicey seeing as you cannot see the terrain below you and you are descending below the published MDA?