Bug: waypoint alert spam when perpendicular to it

[CGameProgrammer]

On my flight plans my waypoints are often airports that I fly near and need to contact, but I don't literally fly to them, just beside them. When I'm closest to them, meaning my flight path is exactly perpendicular to the airport, I get 5-6 waypoint alert audio messages in as many seconds. It's quite obnoxious. It should never issue a waypoint alert for the same waypoint more than once per minute, or at least once per 10 seconds.