Originally Posted by
Someone Somewhere
Sampling rate has been given many times as 1Hz. Read through both the FDR group's report (#1) and minimally-processed FDR data (#2) on a previous GEnx/787 engine issue:
https://data.ntsb.gov/Docket?ProjectID=84481
If the switches are cutoff, the FADEC does not attempt to start the engine.
If the switches are moved back on, the FADECs do anything they can to recover the engine, except use the actual starter motors (unless the start switch is moved too).
The starter motors wouldn't have been available in this case as no ground power, APU, or second engine for cross-start.
"IAS Disagree" seems to be far closer to the latter?
Also "AoA Disagree Alert".
Thanks for the help, and your patience......
One last. The sampling rate for FADEC CUT?