falcon50flyer,
You write, "Yes, if you ask Bombardier, they will advise you that assymmetic spoiler retraction is "not probable", especially after a service bulletin of a couple of years ago, BUT ask any Flight Safety LR-45 instructor, and thy will tell you that there have been a least 3 reported cases of it actually happening."
What I really want to know from Flight Safety is how many incidents have there been after the SB. Often we get so caught up in telling 'war stories' from the past that we forget the problem has been fixed and is unlikely to re-occur and thus our training and understanding of the aircraft we fly is compromised.
best regards,
Bruce Waddington