In airline accidents, the NTSB and first responders handle the black box recovery. The airline doesn't touch the unit itself. The NTSB techs read the data and C

In airline accidents, the NTSB and first responders handle the black box recovery. The airline doesn't touch the unit itself. The NTSB techs read the data and CVR audio. Airlines are not allowed to comment on the investigation (including interpreting black box data) so the only official version is that of the NTSB. I've never heard of an airline accident in the US where public or passenger video (cellphone or otherwise) contradicted the black box data.