“Unmanned aircraft system activity, 2 miles east of Brandywine Airport, 300 feet and below.”
Issue UAS advisory information for pilot-reported or tower-observed activity, when in your judgment, their proximity warrants it. If known, include position, altitude, course, and type. Continue to issue advisories to potentially impacted aircraft for at least 15 minutes following the last report.
“U-A-S activity reported, 12 o’clock, 1 mile, altitude reported one thousand two hundred.”
“Unmanned aircraft system activity observed, 1 mile east of Trenton Airport, altitude unknown.”
FAA Order JO 7200.23A, Para. 2.C Advisory Information.