Terribly nice of Bombardier to pay compensation for faults that are caused by shoddy maintenance.
SAS orders 27 Bombardier aircraft in Q400 settlement deal
"The details of the agreement are confidential but SAS Group confirms the total financial compensation is slightly more than SEK 1 billion ($164 million) in the form of a cash payment and credits for future firm and optional aircraft orders”
Considering how important reputation is to any aircraft manufacturer I really can't see Bombardier agreeing to take this hit if there was any suspicion that these particular issues were caused by poor SAS maintenance.
None of the reports on the specific accidents seem to point the finger at SAS either. Yes, they had maintenance/safety issues around the same time, but there is nothing to suggest it was this that caused the problems with the Q400.