Insights

The U.S. Department of Transportation (DOT) published a final rule amending 14 CFR Part 234 that fundamentally changes how airlines report the causes of flight delays and cancellations. Effective October 19, 2026, the rule implements Section 511(b) of the FAA Reauthorization Act of 2024 by creating a new reporting category, the “Section 511(b) category,” for ten specific events that Congress determined are not attributable to airline control. The rule simultaneously narrows the existing "Air Carrier" reporting category by expressly excluding those same ten events.

The week of June 29 brought a flurry of regulatory activity from the Department of Transportation (DOT), the Federal Aviation Administration (FAA), and the Transportation Security Administration (TSA) impacting companies across sectors including airlines, supersonic aircraft manufacturers, drone operators, and owners/operators of critical infrastructure facilities.  A summary of the key developments is below.