Originally Posted by
212man
Definitely not common in the US
FYI: that changed about 10 -15 years ago. Most GOM twins have CVR/FDRs installed even thought the rules didn't require. Part 135 was updated about 10 years ago to require recorders in certain twins. You even found them in EC135s when they flew the GOM. There is also a move to install in single turbines with some operators doing that now. The problem years ago was there wasn't a recorder that would "fit" in small single turbine helicopters. Now there are several smaller recorder options with STCs which have made their way into some EMS singles.