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VO
- Usado para
- visual observer
- Fonte1
- INTERNATIONAL CIVIL AVIATION ORGANIZATION. Unmanned aircraft systems (UAS). Montreal, 2011. (Cir. 328 AN/190).
- Contexto
- In the United States, large UA that are allowed access to non-segregated airspace are required to have a transponder on board. These UA do not have ACAS systems, or if they are equipped, are prohibited from being used. Smaller UA are generally required to fly line-of-sight from the pilot. These UAS do not normally have transponders and usually have a separate visual observer to accomplish detect (see) and avoid and collision avoidance responsibilities.