Package-Delivery Drones Likely Years Away From Federal Approval

Despite escalating industry pressure for approval of package-delivery drones, safety experts and federal documents indicate widespread flights aren't likely before the next decade. U.S. aviation authorities only recently kicked off the formal, time-consuming process of defining the types of collision-avoidance systems considered essential for such operations to receive broad regulatory authorization. Drafting the technical standards is projected to take three or four years, envisioning a suite of ground-based and airborne sensors that haven't yet been developed. Even strong proponents of unmanned aerial vehicles predict that delivering packages to individual customers probably won't gain significant momentum until at least roughly 2020. "It's not outside the realm of possibility that by the end of the decade, we could see more routine uses" of package-delivery drones, according to Paul McDuffee, co-chair of the federal standards-setting panel and a high-ranking official with Boeing Co. BA -0.13 % 's drone-making unit, Insitu Inc.