I think the 'thumbs up' should be given to the designers at De Havilland - the reason its called Avro RJ etc is more to do with the shutdown of Hatfield and the transfer of everything to Woodford- then that bit of BAe Commercial Aircraft business was re-badged as 'Avro'- I know I've still got my Avro name tag. Didn't the 146 have some 'rugged runway' capability as part of its early ( (1980's) sales blurb.