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It’s a Plane: Significant Modifications do not Result in Substantial Transformation

Client Alert | 1 min read | 03.13.17

On March 10, 2017, U.S. Customs and Border Protection published a final determination under the Trade Agreements Act that the country of origin of a Brazilian-manufactured military cargo airplane would remain Brazil, even after the aircraft undergoes significant conversion into a civil fire-fighting aircraft within the United States. According to CBP, the U.S.-origin changes to the aircraft—which include removing and adding various systems and components to install fire suppression capability—are not sufficient to change the aircraft’s “fundamental identity” and thus, do not constitute “substantial transformation.” The CBP emphasized that the aircraft would maintain its “most important” systems, the “basic structural integrity and the aerodynamics of the aircraft” would remain unchanged, and there was no evidence to demonstrate meaningful changes to the aircraft’s power, speed and range, or to the electronics and instruments used to fly the plane.

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Client Alert | 5 min read | 09.03.26

DOT Final Rule Narrows Airline Delay and Cancellation Reporting Obligation Under FAA Reauthorization Act of 2024

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....