Track the difference between a rule's publication date and the date it applies to a flight.
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EU rule change
Regulation (EU) 2026/2202 applies from October 23, 2027. Don't automatically use its future procedures for an earlier flight.
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Other changes
Brazil's 2026 amendments need another effective-date check. We haven't enabled an automatic current-law calculator for them.
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The rule, route, airline, and facts of your flight can change the answer.