The FAA recently released Advisory Circular (AC) 91-57D, replacing the previous version, AC 91-57C. While this latest update is largely administrative in nature, it also incorporates updates resulting from the 2024 FAA Reauthorization Act, particularly as it relates to recreational UAS operations. These changes reflect continued efforts to refine and clarify rules for hobbyists, educational institutions, and community-based organizations such as the Academy of Model Aeronautics.
Here’s a quick look at what’s new in AC 91-57D and what it means for the recreational flying community:
Updates from AC 91-57D
1. Expanded Definition of Educational UAS Operations
AC 91-57D clarifies the scope of educational UAS operations under U.S. Code 44809. These operations are now recognized to include:
· Higher education institutions
· Secondary and elementary schools
· JROTC programs
· Chartered clubs of a recognized Community-Based Organization (CBO), such as the AMA
This clarification ensures that more educational institutions and programs can legally and safely engage in UAS operations under existing FAA recreational guidelines.
2. Authorization for Fixed Flying Sites in Class G Airspace
Another update is the recognition that operations above 400 feet can be approved at fixed flying sites in Class G airspace. This is a win for AMA members, as the organization successfully secured this provision earlier in the year for its club sites. It gives clubs the opportunity to conduct higher-altitude operations in designated areas.
3. Clarification on Class E3, E4, and E5 Airspace
The AC also addresses the FAA’s current interpretation regarding operations in Class E3, E4, and E5 airspace. According to the agency, Congress has not granted explicit authority for the FAA to approve UAS operations in these classes of controlled airspace; however, AMA is actively working with both the FAA and Congress to advocate for a legislative change that would allow for appropriate authorizations.
4. Requirements for Educational Institutions Flying Above 400 Feet or Over 55 Pounds
Educational institutions that wish to fly above 400 feet above ground level (AGL) or operate UAS weighing more than 55 pounds must now be affiliated with an FAA-recognized CBO, such as AMA. This underscores the importance of partnerships between schools and organizations like the AMA in maintaining safe, compliant operations.
5. Sanctioned Events at Temporary Flying Sites
Events that are sanctioned but held away from a club’s usual flying site—and that plan to fly above 400 feet or with aircraft weighing more than 55 pounds—must request Fixed Site status from AMA for the duration of the event. This helps maintain clear oversight and coordination between event organizers, AMA, and the FAA.
What Hasn’t Changed?
Most of AC 91-57D remains consistent with the previous version, AC 91-57C. The foundational principles and safety guidelines for recreational UAS operations continue to apply, offering continuity for hobbyists and clubs already operating under earlier versions of the circular.
For more information or to see how these changes might affect your club or institution, contact AMA at (765) 287-1256 or amagov@modelaircraft.org. You can view the full text of AC 91-57D here. To remain current with the most recent government-related news, regularly visit the AMA Government Affairs blog.