Comment by TacticalCoder

But brand new doesn't mean the repairs / mainenance were done correctly. It could both be brand "new" and defective.

We've seen lots of serious fuck ups in Europe lately: including for a start several cases of maintenance improperly done on big passenger planes that nearly led to hundreds of passengers deaths (several planes have been diverted in the last months and the cause was improper maintenance).

I'm not saying improper repairs/maintenance on the rails are the cause: I'm saying it's a fact we've seen improper repairs/maintenance on passenger planes in the recent months.