from Hacker News

No CVR or FDR on 787: Instead, Two EAFRs (Enhanced Airborne Flight Recorder) [pdf]

by interestica on 6/17/25, 8:53 PM with 1 comments

• by interestica on 6/17/25, 9:02 PM

  Media coverage, and thus wikipedia info, on this incident is a bit misleading. A lot of reporting assumes a separate CVR and FDR, but that doesn’t apply here. This is one of the first major incidents involving the 787 where that distinction matters. For example: https://www.bbc.com/news/articles/cjwqjv09q7xo

  But, the 787 uses Enhanced Airborne Flight Recorders (EAFRs), which combine both cockpit voice and flight data functions. The functions are combined into a single unit. There are two units per aircraft: one located forward, one aft, providing redundancy. Each unit includes a Recorder Independent Power Supply (RIPS), which is relevant given early speculation about a possible electrical fault.

  https://www.militaryaerospace.com/power/article/16718134/ge-...

  From a 2012 incident, you can check out what kind of data the EAFRs pull in:

  https://data.ntsb.gov/Docket/Document/docBLOB?ID=40431665&Fi...

  For more on the data storage within the EAFR: https://skybrary.aero/sites/default/files/bookshelf/2955.pdf