Tucumseh;
There was a change to the checklist to make it clearer and the CAA mandated a higher minimum landing fuel (90kg rather than 60).
We loaned a 135 to the AAIB for some tests and also flew the CAA. There was a test of the systems fleet wide and the aircraft carried on.
Chop; try sitting in a 135. The system is not confusing. But like any system if mishandled it will bite. I’ve had a demo of what the pilot had in front of him that night. It is easily solved.
SND