Lion Air Boeing 737MAX crash investigators have not yet found the Cockpit Voice Recorder, but said to release the preliminary report on 28 or 29 November 2018.
Komite Nasional Keselamatan Transportasi, (KNKT) of Indonesia said on Monday that it will publish the report over the internet, one month after the accident.
The agency has recovered the Flight Data Recorder on 29, Oct, 2018 and was able to download information to recreate the flight path to identify causes and contributing factors for the crash.
FDR record significant flight parameters (at least 88 parameters), including the control and actuator positions, engine information and time of day. Most FDRs record approximately 17–25 hours of data in a continuous loop.