Re the quote....
"Its unknown how many people were on board,........"
Doesn't anyone use a 'flight note' anymore..??
Seeing as how we don't have a dedicated 'Flight Following Service' anymore, at least the P.O.B. / route / endurance, plus ELT's etc details is kept 'in the office' at point of departure..??
Very sad for all concerned, including those who have to go to search for 'unknown' numbers of potential survivors.....
Sad indeed - but the mind 'boggles'....