The National Airspace Information Monitoring System (NAIMS) is a program run by the Federal Aviation Administration (FAA). Its main goal is to gather, maintain, and analyze aviation statistics based on accident and incident reports in the U.S. national airspace system. Each month, NAIMS releases a report that is accessible to the public. This report provides data to the National Aviation Safety Data Analysis Center Database (NASDAC) and also answers public inquiries regarding safety information.
Reported incidents include several categories: near mid-air collisions (NMACs), operational errors (OEs), operational deviations (ODs), pilot deviations (PDs), vehicle/pedestrian deviations (VPDs), surface incidents (SIs), runway incursions (RIs), and flight assists (FAs). The monthly NAIMS report tracks trends and distributions for each of these indicators. For instance, the report details operational error rates (OEs per 100,000 operations) for every Air Traffic Control (ATC) facility.
NAIMS keeps the original forms for five years, while an electronic database containing copies of each form is maintained indefinitely.
