Mount Cook's ATR72's have white strobing beacons.
Typical fuzzy early morning at NZCH few weeks back, behind one at hold and had to ask atc to get him to turn it off. Was flashing straight at us as we are about his tail height.
Think they have a the ability to turn the tail one off and leave the belly one on.
They are easy to spot at night when everythings flashing.
Ever been close to an A380 - dunno how many 'wing lights' they have, but they are very Las Vegas like at night! Though the LED's are cool!