Lemain
Let's try go put this radar issue to bed. The AAIB used the radar data along with video evidence to produce a track of the aircraft. The radar helped confirm the positioning of the Hunter from the few returns used. Furthermore, the report clearly states the limitations in using the radar data to 'track' a dynamic display (page 72-73) and the associated mode C info. Does anyone need to know (say) that the radar return on the run in was 20m further west? No, not relevant.
The bent loop was clearly depicted on several videos from various locations. There was no dispute about where the aircraft tracked. Again, does an error in the radar data have any impact on anything! No.
The radar data was used by the AAIB as a tool. The limitations in using the data was clearly shown.
The ASI & altimeter were accurately bench tested. Do we need to know the accuracy of the pressure test set used? What about the 115vac 400Hz supply they used, could that have had an effect on the bench testing? What about the post accident engine strip data from Rolls; do they need to include all the caveats with the methods they used to produce that data?
I'm not trying to beat you into submission, but can assure you that any errors on the radar data used by the AAIB have absolutely no bearing any possible conclusion to the accident.