You have to use the blame sandwich in this case. You’ve heard of the shit sandwich, don’t just criticize a crewmember, put the criticism (the shit) between two good things (the bread).
When you’ve screwed up use the blame sandwich:
First take full responsibility. This is what the boss wants to hear and they won’t like it if they don’t.
Then, the short explanation will have many unexplained gaps. Fill in these gaps by appearing to give a fuller explanation of the incident but in fact weave a new story to weasel out of responsibility by explaining how it was actually the crew’s fault.
Lastly reiterate that you accept full responsibility and outline the steps you’ve taken to prevent recurrence. Something along the lines of “in the future I will insure my instructions are fully understood and followed”.