Airline Delay and Cancellation Cause Categories
Current understanding
To be populated as evidence accumulates.
Evidence log
- 2026-10-15 — Cause of Airline Delay and Cancellation Categories Under Section 511(b) of the FAA Reauthorization Act of 2024; Delay of Effective Date: DOT delayed the compliance date for carriers to begin using the new Section 511(b) delay-and-cancellation cause categories (adopted in the September 2026 final rule) until February 1, 2027, extending the prior reporting regime by several months. (novelty: 2)
Open questions
Related
Contributing findings
Cause of Airline Delay and Cancellation Categories Under Section 511(b) of the FAA Reauthorization Act of 2024; Delay of Effective Date
15-oct-2026
novelty 2
per-area 2
weakens