Also note the AAIB web site does not mention the accident, to a G reg A/C. Something doesn't tie up here, at least on the information available at the present time. Flight inspection is different from "normal" flying, but I would not call it outside of normal parameters (possible exception is usually a high g turn at low level after a ILS calibration run, back to the starting point) - but if flying an uncalibrated ILS as if it was a calibrated ILS, you do need a strong stomach (mine is)! I was a technical manager and seldom flew with the team, many moons ago. Such a sad loss. Like others, I wait the fianl report, assuming it is published.