When i was driving my "Crashsite-Tour" and didn't come across a single Helicopter on 4 Servers i gave up very disappointedly. I read that there may be up to 3 crashsites on each server. Which means there can also be only one or two, or zero!!! On a clear day you can see the smoke from 1 km away, maybe a little more if you trained your eyes ;) But still, it takes a tour of about 10 km to visit or drive by 90% of all possible spawns. And don't tell me the ones i didn't find were on those spots...

However my idea is: How about a SOS-Signal being radioed from the wreckage which you can receive with a Walkie-Talkie (maybe you have to be around 1 km to get it or sth like that) or a radiostation settled on Airfields, Green Mountain and similar places. It's not necessary the message contains the exact spot where the Chopper came down, assuming every passenger died in the crash, but it should contain some information like the last known position, which is sent in any SOS/Mayday.