Definition
Common pilot nickname for the high-intensity sequenced flashing approach lights installed at the approach end of certain runways. The lights flash in rapid sequence from the farthest light toward the runway threshold, appearing as a fast-moving ball of light racing toward the runway. They help pilots visually acquire and align with the runway during low-visibility approaches.
Plain English
A line of bright lights at the start of a runway that flash one after another, very fast, in a chasing pattern toward the runway. Pilots call it 'the rabbit' because the light looks like it is running. It helps you see and line up with the runway when visibility is poor.
Context Anchor
Seen on some instrument runways during approach, especially at night or in reduced visibility, as part of the lights leading to the runway.
Derivation
Pilot slang. The rapid-fire chase of lights toward the runway looks like a rabbit running along the ground, and the nickname stuck. The official name is 'sequenced flashing lights,' but 'the rabbit' is universal in cockpit and ATC usage.
Why Pilots Care
Provides a clear, moving visual cue that helps confirm runway alignment in low visibility or at night.
Intuition Check
Do not read “rabbit” as the animal here. In this FAA context, “the rabbit” means the flashing approach lights that appear to run toward the runway.
Example Sentence 1
Breaking out of the clouds at minimums, the captain called 'rabbit in sight' and continued the approach to landing.
Example Sentence 2
In low visibility, the rabbit gave a moving visual reference that helped guide the aircraft to the threshold.