I was sent to Hatfield in 1981 to evaluate the 146, as a replacement for twin t/props, especially on hot 'n high operations with unsupported stops at very basic airfields. I don't think it had even flown by that time.
I remember a great deal being made of the fact the the aircraft could carry a complete spare engine, in a number of boxes, in the hold.
I mentioned that in my report as a huge advantage, to the amusement of the boss, an aircraft engineer by background.
"Why do you think they're promoting that?" he said, roaring with laughter, "it's because they're expecting lots of engine problems". He also suggested that I was a "gullible plonker", which was probably right.