On Sun, 2 Jan 2005 11:31:26 -0600, "Marty"
wrote:

The thing that gets me is that this collision would still have happened
because,
"N4891F'S X-PONDER WASN'T DISPLAYED DUE TO EQUIP CONFIGURATION."
IOW, stand-by mode.

I read this as a configuration "error" on the controller's display
(filtering out VFR targets, or targets above/below a certain
altitude).

Tobias