text: Chapter 4
  TACTICAL LANDING LIGHTS
  4-63. The tactical landing light system provides visual cues for landing in a tactical landing site. When
  the aircraft approaches from terrain flight altitudes, it should use the inverted "Y" system. Aircraft
  normally approach a tactical landing site without the aid of the search landing light. The lighting for a
  tactical LZ can consist of handheld flashlights or "beanbag" lights arranged on the ground.
  4-64. Regardless of the type lighting device used, pathfinders identify the touchdown point with at least
  two lights. At night, they can designate different helicopter sites with lights of different colors. They might
  also use different colors to separate flights within a larger formation. A lighted (inverted) "Y" indicates the
  landing point of the lead helicopter (Figure 4-17).
  Figure 4-17. Placement of the inverted "Y" or NATO "T" at the number one touchdown point.
  4-65. At night, all landing lights should be placed in directional holes that can only be seen from the
  direction of approach and from above, but not from the ground. If this is not possible, the pathfinder turns
  his hood upside down, or keeps all lights off for security purposes until the last practical moment.
  4-66. At other touchdown points, helicopters land with the right landing gear or skid just to the left of the
  light (Figure 4-18). They also place a signalman at a sling-load point. Then they beam the lights in the
  direction from which the helicopters approach.
  Figure 4-18. Placement of additional touchdown point markings for night use.