I hear you and the 1-6 list isn't great. Add to that the design change that allowed pre-rotation to +++++ and one wonders how these things get approved quickly the level of testing and the knowledge that exists over seeing all of this... I wonder if the Accident branch conversation thread has been something like this:-Well it seems like there are a couple of different reasons
1) AutoGyro. A structural design issue between hub bar and blade
2) AirCopter. Same. Both these are copies of each other
3) Trendak. It’s an AirCopter rotor as well
4) TAG. It was a obstruction and quality control issue where balancing rods were not properly secured and came out
5) Tango. It’s a structural design issue I suspect
6).ELA. I am not quite sure why but I have seen a few composite blades with cracks starting
I decided to go with Averso because Dominator did not at the time have appropriate blades for a 2 seater. Averso in my research had a lot of rotors out since 2004 and there were no reports of in flight failures or cracking and generally no negatives I could find. I did not want to get into figuring out how to manufacture the rotors when there was plenty else to figure out.
I know that Averso was of the opinion that AutoGyro 2400 hours lufe for their rotors was not appropriate given Averso rotors are about 20 pounds heavier because of having that much more metal and structure and they are lower.
"Hey why did that rotor come off??"
"Well it was over loaded"
"Hmm lets do some tests"
"Hang on lets see how our testing relates to the design / approval documentation and the compliance documentation"
"Hang on who signs this off?"
"Hello regulator, who signed this off and with what credentials?"
"Lets dig a bit deeper"
[Regulator points to manufacturer, who points to regulator, who don't like the Accident Branch critique...regulator and Accident Branch get the port out over coffee and cigars]
"We can't have an Accident report that says we don't know what we are doing..."
"OK its agreed"
[Final report - "Gyro crash inconclusive..."]
"Hello Accident Branch"
"We have another accident"