That's dragged a trip out of the memory bank. Just after 360 got the first T17s (B2 with knobs on), as an ex cadet, and first tourist, I was programmed to take an aircraft to Cranwell for the students to see. In the hour before take-off I was taken aside by several of the more experienced (ie older) pilots and warned that "more pilots lose their flying badge for beating up their FTS than for any other reason". Suitable chastened, I set off for Sleaford Tech, parked our shiny "new" jet and went for coffee. A couple of hours later, having shown the studes what we could of the T17, we crewed up, did the checks and called for taxi clearance. Got that, and then the tower called "You are clear for a low fast run!" The T17 was limited to 250kts for fatigue reasons, but was allowed to go to 425 (as I recall) for trim checks, so we did a low trim check! Seems a lifetime ago now.