Anti-collision light

[1] Historically they have used incandescent light bulbs, but recently LED lamps have been used.

Beacon lights are flashing red lights fitted on the top and bottom fuselage of an aircraft usually on larger passenger aircraft.

Some spin to produce the flashing effect, increasing the chance they will be noticed.

Strobe lights are flashing white lights on the furthest left, right and, on larger aircraft and some smaller ones, back points of an aircraft.

They are sometimes turned off in cloud or fog, as they can further obscure the pilot's sight outside of the aircraft by reflecting off water particles.