In January 1974 an F28-1000 VH-FKA over-ran Runway 10 at Broome during a night landing in heavy rain. The aircraft became bogged in soft earth. No one was injured and the damage incurred by the aircraft was minor.
See report at:
https://www.atsb.gov.au/media/24684/197406015.pdf
Among other things, the report stated: The aircraft was also equipped with a CVR which provides a record of all radio communications between the aircraft and ground communications as well as audible speech and sounds heard in the cockpit. When cockpit audio recorders were first installed in Australian airline aircraft, the Australian Federation of Air Pilots (AFAP) insisted that the information they contained should not be used in the investigation of air safety incidents or any accident which the flight crew survived.
In the interests of having this source of information available for other occasions, the then Department of Civil Aviation agreed to this demand for the time being. Accordingly, the evidence contained in the cockpit audio record for VH-FKA has not become available for use in this investigation.
That was in 1974. Does anyone know if and when that restriction imposed by the AFAP was eventually removed?