as long as an engine is running
or, more generally, when power is on the ship ? - ref
CVR and
FDR, noting the usual caveat that present rules may not apply specifically to a given installation on an older Type.
can record 50 hours data
and, for some, longer. The
Fairchild (L3) F1000 usually gives us around 100 hours with a bit of variation, presumably due to what the actual history is and how this affects compression algorithms... we generally see 80-110 hours