The U.S. Department of Transportation’s Bureau of Transportation Statistics (BTS) has released the 2017 Annual Report: Blowout Prevention System Safety, which provides information on equipment component failures occurring during drilling and non-drilling operations on rigs in the Gulf of Mexico (GOM) Outer Continental Shelf (OCS). The reporting of such events is mandated by the Well Control Rule (WCR), published by the Bureau of Safety and Environmental Enforcement (BSEE), Department of the Interior. The publication of this report represents a groundbreaking collaboration between industry and government stakeholders and is a significant milestone in promoting safety on the OCS. The report includes an analysis of equipment component failures and other key information such as root causes of failure events, follow-up response to failures, and opportunities to improve data quality. In 2017, the first full year of mandated WCR reporting, 18 of 25 operators in the Gulf of Mexico reported 1,129 rig equipment component failure events, and the notifications involved 45 of 59 rigs operating in the Gulf of Mexico. The 18 reporting operators represent 90.2 percent of new wells drilled in the Gulf of Mexico. The report begins by analyzing aggregate equipment component failure data and then, in separate sections, presents statistics on the reported events for the two major types of BOP stacks (subsea and surface). Both types of BOP stacks were associated with component failures and most notifications were associated with the more complex subsea BOP stack (92.5 percent).