To keep current on SPB
spots in your area, you must frequently update flight maps. Use the same
set of maps or photos for all aerial surveys in a given year. This reduces
the chance that a spot will go unreported or be reported more than once.
Before each flight, note on your aerial map SPB spots reported by ground
crews as inactive or controlled. The notation prepares you for spotting
A suggested system for recording spots and updating SPB flight maps is
given in table 2. To use this system, draw a small circle around each
new spot on your map. Use a different colored pencil for each survey flight.
As new information comes in, alter the circle to indicate the current
status of each spot.