Robert, Yours would not be the first KR to shed an aileron weight at speed. We've seen that before at the KR Gathering in Red Oak back in 2003. The Aluminum angle typically used to mount the aileron counterweight is subject to fatigue, and can fail at the bend causing it to drop the counterweight. Just missing the counterweight at speed can be enough to cause the aileron to go into flutter. Your witness seems to confirm what I suspected when I first read this account; that the counterweight mount may have failed dropping the counterweight and inducing aileron flutter. It was recommended at the time to consider either replacing the aluminum angle with a 4130 steel angle bracket, or find a way to stiffen or brace the aluminum mount to prevent fatigue of the aluminum angle.
-Jeff Scott Cherokee Village, AR ------------------ Cc: "robert gill" <robertg...@live.com.au> Subject: Re: KR> KRnet Digest, Vol 6, Issue 12 Robert Gill ________________________________ but a witness has told me the saw something small fall off the plane just before it happened traveling at the same speed, can only assume it was the mass balance as one is missing (from the still attached aileron). _______________________________________________ Search the KRnet Archives at https://www.mail-archive.com/krnet@list.krnet.org/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org
