---------------------------------------------------------- Yak-List Digest Archive --- Total Messages Posted Thu 03/24/11: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:09 AM - Re: Yak 52 aileron (Francois Davel) 2. 10:13 AM - Yak-52 elevator failure (Richard Goode) 3. 03:17 PM - Re: Yak-52 elevator failure (Didier BLOUZARD) ________________________________ Message 1 _____________________________________ Time: 06:09:44 AM PST US Subject: Yak-List: Re: Yak 52 aileron From: "Francois Davel" Hi there My friend has already sourced one, so all is good. Thanks for all the help and messages. Cheers Francois -------- Round Engines RULE! Read this topic online here: http://forums.matronics.com/viewtopic.php?p=334905#334905 ________________________________ Message 2 _____________________________________ Time: 10:13:57 AM PST US From: "Richard Goode" Subject: Yak-List: Yak-52 elevator failure At the end of last year, the elevator actuators segment on a Russian Yak-52 failed, and the resulting crash was fatal. The "sector" involved is the plate between the two elevator end plates, underneath the vertical stabiliser. The elevator cables connect to the top and bottom of this plate, and clearly if the plate fails all elevator control is lost. The current design is made from high tensile aluminium , and it is expected that there will be a formal Service Bulletin requiring a change to steel. In the meantime, all 52 owners are strongly recommended to remove this plate and have it crack-tested. If you follow this link, http://www.russianaeros.com/Yak-52%20Elevator%20Failure.htm you can see a photograph of the failed item from the crashed aircraft, as well as a photograph showing the plate in place on a 52. Richard Goode Aerobatics Rhodds Farm Lyonshall Herefordshire HR5 3LW United Kingdom Tel: +44 (0) 1544 340120 Fax: +44 (0) 1544 340129 www.russianaeros.com ________________________________ Message 3 _____________________________________ Time: 03:17:03 PM PST US Subject: Re: Yak-List: Yak-52 elevator failure From: Didier BLOUZARD Rich Will that concern also The 18T??? Will you provide the steel plate for the 52? Thanks and best regards Didier Blouzard +33(0)6 2424 3672 Le 24 mars 2011 =C3- 18:10, "Richard Goode" a =C3=A9crit : > At the end of last year, the elevator actuators segment on a Russian Yak-5 2 failed, and the resulting crash was fatal. > > > > The =9Csector=9D involved is the plate between the two elevato r end plates, underneath the vertical stabiliser. The elevator cables conne ct to the top and bottom of this plate, and clearly if the plate fails all e levator control is lost. > > > > The current design is made from high tensile aluminium , and it is expecte d that there will be a formal Service Bulletin requiring a change to steel. In the meantime, all 52 owners are strongly recommended to remove this plat e and have it crack-tested. > > > > If you follow this link, http://www.russianaeros.com/Yak-52%20Elevator%20 Failure.htm you can see a photograph of the failed item from the crashed air craft, as well as a photograph showing the plate in place on a 52. > > > > > > Richard Goode Aerobatics > > Rhodds Farm > > Lyonshall > > Herefordshire > > HR5 3LW > > United Kingdom > > > > Tel: +44 (0) 1544 340120 > > Fax: +44 (0) 1544 340129 > > www.russianaeros.com > > > > > ========================== ========= ========================== ========= ========================== ========= ========================== ========= > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message yak-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Yak-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/yak-list Browse Digests http://www.matronics.com/digest/yak-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.