Hi Manuel,
you are not the pilots nor the FOCA nor the helicopter companys nanny!
You have done everything you could do. I am impressed that you wrote an
email to the FOCA - no one can tell that there would have been a more
stringent reaction from their side if you had written a letter via snail
mail.
Also, the pilot is fully responsible for what he's doing - and as a
(C)HPL, he should be aware of the dangers of power lines, trees etc. If
you're looking for someone to blame - it's him. Sad but true.
Let's hope the best that he recovers from that sh**
Regards,
Peter