Touchdown Zone Lighting extends to what distance from the threshold and uses what spacing and color?

Touchdown Zone Lighting extends to what distance from the threshold and uses what spacing and color?

• A. Starts 100 feet from the landing threshold, extends to 3,000 feet from the threshold or midpoint, whichever is less; light bars spaced 100 ft apart; emits unidirectional white light toward the approach end.
• B. Starts at the threshold and extends to 2,000 feet; omnidirectional white light; spacing 200 ft.
• C. Starts 200 feet from the threshold and extends 4,000 feet; red light toward the approach; spacing 100 ft.
• D. Starts 300 feet from the threshold and extends 5,000 feet; blue light toward the approach; spacing 150 ft.

Answer: (A)

Touchdown Zone Lighting is designed to give pilots a clear visual cue of where the landing touchdown should occur and to indicate the early portion of the runway for safe rollout. The lights are white and unidirectional, aimed toward the approach end so they are visible to the landing aircraft without being distracting from other directions. The correct setup starts 100 feet from the threshold, then extends up to 3,000 feet beyond the threshold or to the runway midpoint—whichever comes first. The light bars are spaced 100 feet apart. This arrangement provides a predictable, easily interpreted pattern that helps pilots judge their distance from the threshold during the final approach and initial rollout. Other descriptions either change where the lights start, how far they extend, the spacing, the direction they face, or the color. When all these elements align—100 feet from the threshold, up to 3,000 feet (or to midpoint, whichever is less), 100-foot spacing, white unidirectional light toward the approach end—the setup matches standard TDZL practice.

Touchdown Zone Lighting is designed to give pilots a clear visual cue of where the landing touchdown should occur and to indicate the early portion of the runway for safe rollout. The lights are white and unidirectional, aimed toward the approach end so they are visible to the landing aircraft without being distracting from other directions.

The correct setup starts 100 feet from the threshold, then extends up to 3,000 feet beyond the threshold or to the runway midpoint—whichever comes first. The light bars are spaced 100 feet apart. This arrangement provides a predictable, easily interpreted pattern that helps pilots judge their distance from the threshold during the final approach and initial rollout.

Other descriptions either change where the lights start, how far they extend, the spacing, the direction they face, or the color. When all these elements align—100 feet from the threshold, up to 3,000 feet (or to midpoint, whichever is less), 100-foot spacing, white unidirectional light toward the approach end—the setup matches standard TDZL practice.