Under 14 CFR § 89.120, the Administrator may authorize an unmanned aircraft operation without remote identification when the operation is conducted —

Why: 14 CFR § 89.120 permits the Administrator to authorize operations without remote identification solely for the purpose of aeronautical research or to show compliance with regulations.

• Part 89 contains no blanket public-safety or emergency exemption from remote identification; § 89.120's exception is limited to aeronautical research or demonstrating regulatory compliance, and any other deviation requires its own separate Administrator authorization.
• No airspace-class or altitude-based exemption from remote identification exists; § 89.120's exception turns on the operation's research or compliance purpose, not where or how high it is flown.