there are currently 6 mas370 questions (of which 2 are closed). However each of these could be asked without referencing the missing plane.
I suggest removing the tag from these and removing the tag entirely
I think that we should have a generic accident-investigation tag for all questions related to investigations. I can't see having enough questions about each specific accident to warrant having their own tags.
Since none of these questions are really specific to the Malaysian Airlines incident I've removed the tag from them (they, and other questions referencing this incident could probably stand further cleanup to make them more generically applicable.
As a general rule I don't think accident tags are ipso facto a bad thing, but the question needs to be intimately tied to the accident (and it'd be hard to have such a question where the answer isn't "Have you read the Wikipedia article and the NTSB Probable Cause report?")
The reason I choose to add this tag is to be able to group all the questions related to this accident. For someone new to this site looking for info related to this accident it's easier when all questions are tagged accordingly. For one thing it avoids duplicates.
Secondly it allows to filter on it (e.g. I don't want to be distracted by all the MAS370 questions all the time)
Thirdly, when more information becomes available in the future (e.g. interim / final accident reports) it is helpful to have these questions tagged so it becomes easier to correct / supplement earlier answers.