I think what SASless is alluding to is the role that management can play in forming a link in the accident chain. Failing to provide a common IFR fit across the fleet and always doing the IFR training using one particular a/c being the link in his example.
It does/did happen in the N Sea as well. At the time that DECCA was on its way out and despite having notice that new area nav kit was required nothing was done until the last moment. The end result was that our offshore replacement a/c turned up with a Trimble GPS instead of DECCA. I had no company training on the Trimble, there was just an instruction booklet in the door pocket!!
Fortunately we were a mainly VFR operation which gave me time to study the booklet.
This episode showed how management were not focused on Flight Safety
. As far as they were concerned the a/c had a usable GPS it was up to the pilots to learn how to use it!!
HF