I have been flying a DA-42 recently and am interested in a bit of a follow-up in the intervening years since this accident.
It appears that that this happened in the early days when only Thielert engines were available and it appears that there were no ECU back-up batteries.
Was the solution a retrofit to the Thielert models with ECU back-up batteries or were there other changes?
I fly the Austro-engine versions but they used to be Thielerts. Did the factory-built Austro-engine versions get produced with ECU back-up batteries?