Some General Aviation Aircraft in Infinite Flight do not have a rotating/flashing beacon. In the case that your Aircraft does not have a red rotating/flashing beacon, you would use the strobes. If its nighttime, you may not want to use the strobes so in that case you’d just use your nav and taxi lights as a means of identifying that your aircraft is on.
1. FAA: “Air Traffic Plans and Publications”. 4-3-23 from the original (PDF) on 2015-10-12.