"Top: Elevation of the bullet that struck Richthofen, travelling at 30 degrees above/below the horizontal. Note that if fired from below, the bullet must have passed through the lower port wing before striking the head. Below: Azimuth of the bullet that struck Richthofen, fired from eiter 10 or 4 o'clock. Either would have arrived from a blind spot. The dashed line indicates the bullet flight path is below - not through - the upper port wing."

"Top: Elevation of the bullet that struck Richthofen, travelling at 30 degrees above/below the horizontal. Note that if fired from below, the bullet must have passed through the lower port wing before striking the head. Below: Azimuth of the bullet that struck Richthofen, fired from eiter 10 or 4 o'clock. Either would have arrived from a blind spot. The dashed line indicates the bullet flight path is below - not through - the upper port wing." (picture source: Inside the victories of Manfred von richthofen - Volume 1, James F. Miller, Aeronaut Books, 2016)