04

Night, civil twilight, and marginal weather

Chapter 1 set the daytime baseline. This chapter is what changes when the light fades and the weather closes in — the anti-collision lighting the rules demand after dusk, and how the visibility and cloud minimums drive the go or no-go when conditions are marginal.

In this chapter

• +When the night and civil-twilight rules take effect, and the training § 107.29 now requires in place of the old night waiver
• +The anti-collision lighting your aircraft must carry — visible for three statute miles — to fly at night or in twilight
• +How the visibility and cloud-clearance minimums decide a go or no-go once the light and weather turn marginal