If the unit is a dedicated SAR unit you do need to meet these requirements as required/appropriate.
To save someones life while using an aircraft you can do whatever it takes like the Canadian example. The regulators cannot take that away.
In most sane countries where life or limb is at stake you can throw the rule book out the window. Some people seem to be hung up on this one.
Just be aware you need to explain/justify your actions in writing afterwards. You would look pretty silly or possibly be prosecuted if a better option was available. In this case it was the best use of the resources available and within the experience of the crew at hand. More/previous experience in this case and a better understanding of the situation could have made a difference.
Even in the case quoted here which was unfortunately unsuccessful there may be explanations required if the applicable rules were not adhered to.