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A5 Tower Type

The A5 tower type is over 1400′ tall but not more than 1750′ including any appurtenances and is lit by 9 flashing L-864 beacons.


FAA AC 70/7460-1M

  • L-864 beacons include red/infrared LEDs and must flash in sync at 30 flashes per minute.
  • Infrared LED strings must be monitored, and an IR outage is a NOTAM-worthy event.


FAA AC 70/7460-1L

  • L-864 beacons must flash in sync at 30 flashes per minute
  • No L-810 marker lights are required


FAA AC 70/7460-1K, FAA AC 70/7460-1J and FAA AC 70/7460-1H

  • L-864 beacons set to 20-40 flashes per minute
  • 15 L-810 steady-burning marker lights