RO-6 ARL US ArmyRO 6 ARL Army DHC 8 airplane model. The Airborne Reconnaissance Low Enhanced (ARL E), also known as RO 6A, represents the cutting edge in the Army's manned, multi sensor, all conditions AISR capabilities. The ARL E is a modified DHC 8 Q315 aircraft, outfitted with adaptable payloads and advanced COMINT and IMINT sensors. This includes both long and short range Ground and Dismounted Moving Target Indicators, as well as Synthetic Aperture Radar (GMTI