500E Posted August 13, 2007 Report Share Posted August 13, 2007 http://www.ntsb.gov/publictn/1996/SIR9603.pdf An interesting 115 pages Not an up to date overview but interesting all the same Quote Link to comment Share on other sites More sharing options...
Gerhardt Posted August 13, 2007 Report Share Posted August 13, 2007 Reading about all those main rotor separation accidents gives me the willies. Quote Link to comment Share on other sites More sharing options...
Goldy Posted August 13, 2007 Report Share Posted August 13, 2007 Reading about all those main rotor separation accidents gives me the willies. One tape recorder, and a subsequent investigation by Australian authorities solved most of these issues, and the added training of both the SFAR and Robinson safety course. BUT, without the input of the recorder they would have written this one off as some pilot error and moved on.. Quote Link to comment Share on other sites More sharing options...
nicepants Posted August 13, 2007 Report Share Posted August 13, 2007 Sounds like a lot of these accidents involved mast bumping...not necessarily as the root cause. My instructor warned me about that before we started lessons, and he emphasized the danger of low-g maneuvers. Every time we go through a downdraft or do something that makes my seat drop I am concerned about mast bumping. How severe do low G maneuvers have to be to cause concern? Quote Link to comment Share on other sites More sharing options...
mechanic Posted August 13, 2007 Report Share Posted August 13, 2007 Goldy,What recording are you refering too? The accident from, umm what was that schools name....they are fixed wing only now.....darn, can't think..ahh, was it Sierra Academy? I never found any info on that one. Thought they just called it unknown reasons. Thanks Quote Link to comment Share on other sites More sharing options...
Goldy Posted August 14, 2007 Report Share Posted August 14, 2007 Goldy,What recording are you refering too? The accident from, umm what was that schools name....they are fixed wing only now.....darn, can't think..ahh, was it Sierra Academy? I never found any info on that one. Thought they just called it unknown reasons. Thanks N83858 with Sierra...the student had a recorder taping the whole event, from that they could determine rotor horn/ rotor rpm, etc....that is the incident that caused them to re-open several closed investigations and that was the beginning of the SFAR... Quote Link to comment Share on other sites More sharing options...
Goldy Posted August 14, 2007 Report Share Posted August 14, 2007 Sounds like a lot of these accidents involved mast bumping...not necessarily as the root cause. My instructor warned me about that before we started lessons, and he emphasized the danger of low-g maneuvers. Every time we go through a downdraft or do something that makes my seat drop I am concerned about mast bumping. How severe do low G maneuvers have to be to cause concern? Nicepants- remember it is technically not the low G that gets you...its your reaction to it ! Just slow down during the bumpy stuff and keep the rotor loaded...sometimes I even add some collective to keep the weight on it. Years ago , we used to practice lowG's...oh what fun. The turning moment is rapid and will put you into a nose down right bank. You know several seconds before if you are getting into a LowG possibility.....when that happens remind yourself of easy aft cyclic...not left cyclic. I've gotten pretty bumpy without ever getting into Low G....but I slow way down 45-50 knots sometimes in thermals.. When we used to practice it, we would climb nose up and then push over to force a low G...kids don't ever try this at home!! Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.