The D2 tower type is over 350′ tall and should be lit by 3 L-865 white medium intensity beacons at 40 flashes per minute.
FAA AC 70/7460-1L, FAA AC 70/7460-1J and FAA AC 70/7460-1H
- Tower height cannot exceed 700′
FAA AC 70/7460-1K
- D2 tower heights cannot exceed 500′
- Tower with heights of more than 500′ but less than 700′ are classified as C2 and are lit with 1 L-865 and 6 L-856 high intensity beacons
