A remote pilot's site lies beneath a charted military training route marked VR1207. What should be anticipated?

Military training routes are corridors where military aircraft fly high-speed low-altitude training, and they are charted so that other airspace users know where to expect it. The identifier encodes useful information: VR indicates the route is flown under visual flight rules, IR under instrument flight rules, and the number of digits tells you the altitude regime — a four-digit number such as VR1207 means the route includes segments at or below 1,500 feet AGL, while a three-digit number means operations above that. So a four-digit VR route directly overlaps the altitude band a small unmanned aircraft occupies, with traffic that may be moving in excess of 250 knots and gives very little warning. The route being charted does not close it, restrict it, or grant anything; it is information. The pilot's response is to check whether the route is active, keep the aircraft low, brief observers to watch along the route's axis, and be ready to descend immediately.

A charted military training route indicates where military aircraft conduct high-speed low-altitude training, and a four-digit VR route includes segments at or below 1,500 feet AGL — directly overlapping small unmanned aircraft altitudes.

Military training routes are charted corridors for high-speed low-altitude military training. VR denotes visual flight rules and IR instrument flight rules; four-digit numbers indicate segments at or below 1,500 feet AGL, three-digit numbers above it.

Four Digits Means Down Low. VR1207 has segments in your airspace, moving fast.

Charted does not mean restricted. Training routes convey information about expected traffic; they neither prohibit nor authorize anything.

• •Reading a charted route as a restriction
• •Reversing the three-digit and four-digit altitude convention
• •Assuming military traffic will see and avoid a small aircraft