Equivalent Level of Safety (ELOS) to manned aircraft. "Detect-and-Avoid" is the key to file-and-fly access to NAS Must be able to separate UAS from "non-participating" NAS users (e.g. balloons, recreational A/C, ultralights). "On-board" autonomous systems are preferred long-term solution. Technology is in development; general consensus on parameters for "human equivalent" performance. Selected solutions must be thoroughly modeled/tested and reliably demonstrate ELOS.
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