Bravo73 good spot and I was wrong to have said that.
Drugsdontwork......unfortunately in the HEMS world the answer has to be YES, We have basic rules for non life threatening stuff (AA) and alleviation’s from some rules when life is in danger (HEMS). For example for HEMS with 1 pilot the daylight minima en-route is 400ft ceiling and 2,000m visibility / 300ft and 3,000m. The rules clearly state thou shalt go back to base if lower weather is encountered.
Its not nice going home but I know it’s the safer option for the crew and my licence is not at risk and the insurance will pay out if something bad happens.
As brutal as this may sound, the best policy is not to care too much about the welfare of the patient unless you have safely and compliantly arrived. Care more for you and your crew.
I don’t do SAR but I find it very hard to believe that flight in mountains in fog is authorised but maybe I am wrong.