Originally Posted by
chevvron
The first 3 points are bollix; some controllers who say any or all of them are just covering their backs in case of an incident.
Poor radar performance? Put it u/s until it's fixed.
Radar suppression? Depends what you are suppressing, but you can always de-select the suppressors.
Radar clutter? Anoprop or bird activity. Neither should show if the AMTI threshold speed is set correctly.
Much as I disliked the Raytheon ASR10, it was SO processed that the only snag was sometimes the processing produced a hole with no radar cover at all, otherwise anyone who tells you it suffers from the above 3 things obviously has never seen raw radar.
No, they're not 'bollix'
Often controllers who are working today are required to say such things, depending on factors such as radar source, aircraft location etc. Required, as in they are mandated to do so by procedure following hazard analysis.