ENR 4.5 — Aeronautical Ground Lights — En-Route
No en-route aeronautical ground lights (aerodrome identification beacons, en-route obstacle lights, or en-route marker beacons) are currently installed within the Damascus FIR for en-route navigation purposes.
Aerodrome lighting systems are described in the individual aerodrome sections (AD 2). Obstacle lighting in the vicinity of aerodromes is published in the respective AD 2 obstacle charts.
Reference: ICAO Annex 14, Volume I, Chapter 5 — Visual Aids for Navigation.