Right rudder pedal input in the V-tail will lower the right ruddervator and raise the left one. remember do not touch metal of any kind to the magnesium and use distilled water to rinse. When a V-tail Bonanza pilot pulls on the yoke, both ruddervators deflect as shown in Figure 3.1B. Best thing to do is to keep a VERY close eye on the skin and the first sign of any Filiform corrosion have the ruddervators striped,painted,and balanced. ), but these are less easy to repair if they suffer corrosion. In this photo below, the counter balance assembly completely detached from the airplane. The paint shop is very familiar with ruddervators and I have had reports from people that back up that assessment. Corrosion is often encountered with magnesium components like the ruddervators and on some Bonanzas, the flaps and ailerons. DCA/B35/1A Propeller Governor Control Linkage - Inspection Applicability: Model V35 S/N D-7977 through D-9214. V tail on the Cirrus jet made the fuselage 100 times simpler to make. more forward of the hinge line requiring less weight to obtain a proper balance Biggs 405-258-2965 Deason Aircraft Service 913-755-4107 Hampton 479-394-5290 Stebbins 800-852-8155 An STC to reskin many elevators (but not ruddervators) in more corrosion-resistant aluminum is held by SRS at 877-364-8003. SRS can convert 1957-1963 ruddervators to late model 1964-1984 style (and vice versa) by swapping out the weight covers and some structural parts. He reduced power has less pronounced ridges and grooves in its formation. I'm planning to ship them off toward the end of this year the be repaired. On October 15, the foundation announced that the ABS/ASF Manuel Maciel Ruddervator STC Prize of $500,000 will be awarded to "the first firm that certifies and markets kits to replace ruddervator skins on V-tail Bonanzas" covered by Type Certificate 3A15 or Type Certificate A-777 . Mountains. It is always hard to tell exactly from a picture. Ruddervators were found to be serviceable. The cabin was roomy and comfortable for four and the baggage compartment was spacious. Thomas P. Turner Manager of Technical Services Posted 11/16/2009 - 12 years ago Not Accurate | Inappropriate Reply to this Post 76-05-04 Box 12888, Wichita, KS 67277, 316-945-1700 or www.bonanza.org. Model 35, CHI97LA119 . Initial comparison testing of ruddervators One ruddervator is factory original the other has been re-skinned utilizing rivets for assembly. Also, early 60's use the well supported IO-470 Continental engine. According to society officials, the grade of magnesium used for ruddervator (pitch/yaw) flight control skinning in Beech Model 35 (V-tail) Bonanzas is very costly and difficult to source. follow the directions it says you don't need to remove all traces of the corrosion just what is loose. Then treat with CroMag this is alodine 1200 with cromic acid added for treating magnesium. Thank you for the information. Also it will be a N number plane. In the photo below of a S35 Bonanza it was turbulence related since he was flying over the foothills of the Rocky Mid-Late 60's models benefit from widespread adoption of alternator use (as opposed to the more RPM dependent generators), IO-520 in the Bonanza and many airframe parts . These ADs revise and supersede AD 94-20-04 and AD 98-13-02. When we re-paint magnesium in our shop, we mechanically treat the corrosion, then chemically treat the corrosion with the chemicals outlined in Textron's manuals ( Chromium Trioxide O-C-303, Type II), which is a chromic acid treatment. He advised the cost to re-skin both ruddervators is approx. This is a right side ruddervator from a G35 Bonanza. Corrosion was found under stringers and on ruddervator skins and ribs. assembly, notice the corrugated grooves. The paint shop is known to have experience in dealing with ruddervators. During pre-purchase about 3-4 people evaluated them and stated that it appeared that the paint was lifting due to failure of paint preparation. These assemblies were confirmed to be in balance corresponding to the current Beech methods and current AD's and SB's. Both assemblies balanced to 18 inch-pounds. The main problem is the magnesium skin you need to treat is covered by the primer and top coat of paint.It would be very hard to provide any additional protection above what the paint already provides.Best thing to do is to keep a VERY close eye on the skin and the first sign of any Filiform corrosion have the ruddervators striped,painted,and balanced. MAGNESIUM ELEVATOR CONTROL FITTINGS. 23 Jun 2015, 01:33. Ruddervator Corrosion 0 Like This Anne Palotas So, took up the big issue of ruddervators. There is another thing to look at in this photo, the trailing edge rivet line. Also in this area Beech added additional bracing 2/24/2020 - 2 years ago. In my experience they typically do not start corroding from the inside because they are were treated correctly at the factory. Long time listener, first time caller. and the vibrations stopped. item 5 Beechcraft V35 Bonanza LH Ruddervator Torque Fitting Bracket 35-660031-2 Beechcraft V35 Bonanza LH Ruddervator Torque Fitting Bracket 35-660031-2. I have a contract on an N35 Bonanza. and parts from Raytheon. Wondering if this is too advanced to successfully clean up . is welcome and appreciated. That was made mostly of magnesium. The danger in pitting corrosion is the corrosion can get down into the internal grain structure of the metal and continue to grow unchecked and undetectable until it surfaces again. She has been a wonderful airplane to fly and extremely reliable. additional lead washers supplied by Raytheon to balance the ruddervator assembly I also have an S35 here in the UK with a trace of corrosion on one of the iuddervators. We have found the key is that when we chemically etch the surfaces, we get them dried and under heat lamps as quickly as possible to aid in getting them completely dry and then directly into an urethane primer. sustained substantial damage during cruise flight when it experienced tail I have seen one earlier model Bonanza that had the It was aerodynamically clean and the very first ones would cruise 175 mph with a 165-horsepower engine. American Bonanza Society3595 N. Webb Road Suite 200Wichita, KS 67226316.945.1700 |info@bonanza.org, http://bonanza.org/documents/Aircraft%20Technical%20Resources%20List.pdf. I have some corrosion on the right ruddervator and would like to strip and clean. Thomas P. TurnerManager of Technical Services, After taking my A36 to the paint shop yesterday to get the filiform corrosion on the elevators dealt with I started wondering about internal corrosion of these magnesium skins. The V-tail Bonanza also uses magnesium for the ruddervators (only? most abrasives have iron or aluminum oxide for the abrasive, touch the magnesium with that and dissimilar metal corrosion will come on with a vengeance. I feel that we are moving in the right direction. change without notice. I have a similar problem, could you give me your mail address so I can send you a pm? But check other components as well, as the Bonanza fleet ages. The effect is an up and left force from the right tail member and a down and left force from the left member. Ruddervator from a B35 Bonanza A reskinned control surface has a weaker skin assembly, notice the corrugated grooves. So, I decided to take the big risk and have them stripped and painted, as I felt uncomfortable about keeping it in that condition. Includes the Bonanza, Baron, King Air, and Premier lines of airplanes, turboprops, and turbojets. A Beech Bonanza owner asked me to strip & paint his wings from a very early model "V-Tail". Anne, any updates on how your repair went? I hope this helps. negative G's and he described it as a "mild shudder." deeper groove. Use stripper to remove the paint ask for a stripper safe to use on Magnesium. An important question to ask and answer is whether the corrosion is surface only, or if the surface of the metal has become pitted. FAA issues changes to V-tail Bonanza ADs The issue: In October 2002, the FAA published two Airworthiness Directives (ADs), 94-20-04 R1 and 2002-21-13, affecting Raytheon/Beech Models 35 through V35B. He had been flying at about 8,000 feet between 160 to 170 mph. 2/5/2020 - 2 years ago. than the early Bonanza ruddervators. photo below. Repaired. Any constructive input Use distilled water for all your rinsing stripper and Cromag. The V-tail Bonanza uses a unique "ruddervator" system, which combines the rudder and elevator into one surface to reduce drag, controlling the pitch and yaw of the aircraft. Has anybody heared about that?Franz. Some corrosion may have been well hidden. Hey guys! No long engine ducts and no structure that had to miss an engine. 97-06-11 RUDDERVATOR DIFFERENTIAL TAIL CONTROL ROD ASSY, AD The original counter balance lead weight is lighter weight. Then put heat on it to remove any moisture and paint with a good two part epoxy / FR Primer then your top coat. A number of the aircraft, manufactured between 1947 and 1982, have already been grounded because the magnesium skin has corroded. flutter near Mt. From about 1960 or so on appear to be well supported parts in Bonanza/Baron airframes, engines and propellers. assembly required after re-skinning imposes additional within tolerance of the new specification limits. American Bonanza Society3595 N. Webb Road Suite 200Wichita, KS 67226316.945.1700 |info@bonanza.org, Anne Palotas | I would appreciate any input or information in dealing with this. described the vibration as a "mild shudder," and did not think it was Yes, they will run more for maintenance, since there is retractable gear to maintain as well as the constant speed prop also found on the Skylane. from an ABS Tech Tips emailQ: Is there a firm to treat an elevator that has suggestings for treating corrosion starting to form on the elevator? after the two vibration occurrences. allow the straight edge to lay flat. Bonanza Society boosts ruddervator replacement design prize. Phone: (336) 933-7034. item 4 Beech A35-G35 Bonanza LH Ruddervator Trim Tab Assy P/N 35-660040-52 (0422-351) Beech A35-G35 Bonanza LH Ruddervator Trim Tab Assy P/N 35-660040-52 (0422-351) $375.00. Also in March of 2019 the aircraft went through an ABS maintenance clinic and the issue was thought of being mostly inconsequential. Also notice in the photo below how the skin Solutions must be shared as open source technology and survive peer review. The problem. Video 1 Making of a Beechcraft Bonanza Carbon Ruddervator (Maybe.) Thanks, 7D41AE5B-D152-43B0-9B54-B92E6B6FD006.jpeg - 2.1 MB, It looks pretty rough, you need to strip the area and inspect for pitting and if ok treat and paint the area. It is difficult to assess the severity of the corrosion from the picture. He reported that during the flight he experienced a vibration, but thought Simple surface corrosion can be removed mechanically by hand rubbing the area with a non-metallic abrasive pad such as Scotch-Brite. It doesn't have enough rivets installed. this is a conversion coating so rinse and let dry, do not touch the area the coating is very soft until dry. 1996. It looks cool. In some cases packaging constraints make the V-tail the more effective option. Here is a photo of a re-skinned ruddervator, ruddervator assembly. I assume that the other ruddervator would be at 22 degrees up, though of this I am not sure. The American Bonanza Society Air Safety Foundation put the word out April 30 that two separate prizes are available: up to $20,000 each awarded to as many as five individuals or teams who engineer a ruddervator skinned with something other than magnesium. notice the difference The skin is flexed outward or convex in shape, it doesn't This can be hugely expensive to repair. Compliance: Got pix back and here they are - I need opinions and options. Counter Does it happen?? Notice that the weak section completely broke apart from the remaining ruddervator assembly. I'm about to dive into the same issue with my V35B. Looks Looking for recommendations on the best shop to do the work. A Bonanza can be had for the money you're discussing. Also in this area Beech added additional bracing starting with the 1957 H35. I just wished we had that option on our V tails. Use stiff bristle brushes and plastic scrapers or Green dish scruber. Share. I learned, that the intake of PT6 engines of Piper aircraft, which is magnisium, can be treated by corrosion X. ACF 50 would be another choice. Owner Feedback I purchased a 1979 V35B in 2007. follow the directions it says you don't need to remove all traces of the corrosion just what is loose. At least I don't have to deal with a Convair B-36. (Vne speed restriction for 35, A35, B35, 35R), AD It would be very hard to provide any additional protection above what the paint already provides. If not, why? There's a fair amount of surface corrosion on the skins and I've sanded the parts with 320 and 400 grit aluminum-oxide but now I need to pickle the skin before I spray the Epoxy Primer & Polyurethane . Im thinking about moving a A35 to the UK and Im wondering if I can find maintenance facilities for this type of airplane there. ruddervator is weakened by the current replacement skins obtained from Raytheon. $20,000 AUS$. Dealing with these magnesium surfaces is nerve wracking. Yeah, good point. Ruddervators - Bonanza V35A. Hi to my fellow aviators, I am seeking advice in regards to my 1968 V35A Bonanza. After you are done, AD 94-20-04 R2 requires checking the balance of the ruddervator, "even if just touched up". American Bonanza Society3595 N. Webb Road Suite 200Wichita, KS 67226316.945.1700 |info@bonanza.org, Adrian Daley | As for the V-jet, I don't know why they used a V-tail. It turns out his Flaps & Ailerons are magnesium. When the Bonanza came out in 1947, it was unlike anything else. Bob Ripley ABS Technical Advisor Posted 11/13/2021 - 11 months ago Not Accurate | Inappropriate The re-skinned ruddervator has a shallow groove and results in less strength or rigidity. Carolina Aircraft, Inc. Greensboro, North Carolina. Bo's were made for a very long time, the different models have strengths and weaknesses. The HM5 has a thread pitch of 5/16"-24 and a rod end bearing bore of 5/16". If there is noticeable pitting corrosion, the skins usually warrant replacement. Deal with corrosion early and you will almost always be better off financially. Typical cost is $1600. And when your not better off financially your always better off than dead meaning better off money out of your pocket then dead because you ignored maintaining your aircraft. Good morning, I just brought my Bonanza into the annual and we had a discussion about the magnesium problem. The general consensus is that they are serviceable. That speed came at 10,000 feet where the engine would develop but 115 horsepower. threatening. or February 1997, experienced another vibration incident. I have had the ruddervators evaluated by some people familiar with their vagaries. Lloyd,You have filiform corrosion growing there. balance lead weights from a B35 Bonanza, SB 27-3358 this is a conversion coating so rinse and let dry, do not touch the area the coating is very soft until dry. remove the loose corrosion and the ridges of the filiform corrosion. American Bonanza Society3595 N. Webb Road Suite 200Wichita, KS 67226316.945.1700 |info@bonanza.org. If it does, how is it found and/or what kind of problem does it cause? The corrosion on the outside is usually caused by poor preparation during painting.The only way to know if you have corrosion on the inside is to split the skin at the trailing edge and start looking.If you ever have to replace them, you can buy aluminum skins that will all but remove this issue in the future. April 29, 1997, at 1330 eastern daylight time (EDT), a Beech D-35, N5985C, D35, near Mt. Ill be in Oxfordshire. At the 100 hourly, my maintenance shop advised that there is corrosion in both the left and right ruddervators. So, right now they are being treated/prepped/painted. to off-set the additional weight that is imposed from reskinning using new skins Thank you! During pre-purchase about 3-4 people evaluated them and stated that it appeared that the paint was lifting due to failure of paint preparation. A Beechcraft (Raytheon) Owners & Pilots Group providing discussion forums for all Beech aircraft. The smaller HM5 is typically used in early Bonanza, Travel Air and Baron nose gear rod ends at the nose gear well end of the rod and at the "V"-Brace" arm to push/pull on the nose gear mechanism (#48 in the part catalog extract below). Aeroplanes Beechcraft F33, 35, V35 and A36 Series (Bonanza and Debonair) Issued 19 December 2019 Page 3 of 15 CAA of NZ . Please excuse typographical errors etc. TL;DR On the Beech Bonanza, the yaw and pitch inputs are added, so that full back on the yoke gives about 22 degrees of ruddervator, and adding full right rudder would add 22 more degrees for a net result of 44 degrees up of ruddervator on the left. Over 10,000 were built, but with the weakness of magnesium skinned control surfaces. Notice the actual weight differences from the ruddervator, notice the additional internal bracing rivet line that adds Proper ruddervator balance has always been a critical matter on the V-tail Bonanzas, to prevent flutter, which can contribute to severe structural damage and even in-flight break-ups. The counter balance lead weight on the left is used along with The American Bonanza Society Air Safety Foundation is offering cash prizes to those who can come up with a solution to the Beechcraft V-Tail Bonanza's ruddervator problem.. 10% OFF PRIVATE PILOT, INSTRUMENT, OR COMMERCIAL GROUND SCHOOL!!! A few small areas of pitting may be treatable and acceptable.I agree with Dale that you should have the ruddervators examined by a shop that is familiar with magnesium skins and their proper treatment. This outer section of the This is an initial draft document subject to December Hello Adrian. 89-05-02 He Sterling, Kentucky. We do this within hours of the chemical etch, not the next day or days later. Is there a treatment to prevent further corrosion? Free shipping. Ruddervator counter balance assembly weights. They were re-painted 9 years ago and are otherwise perfect. On loads on the red shaded area which is actual weaker after a re-skinning of the This heavier weight is needed like the Repair Station skipped several locations. Raytheon SB and AMOC to AD 98-13-02, AD - 2 years ago and are otherwise perfect not sure and grooves in formation... Is flexed outward or convex in shape, it was unlike anything else problem, could you me! Problem does it cause 1947 and 1982, have already been grounded because the skin... Imposed from reskinning using new skins Thank you after re-skinning imposes additional within tolerance the... They typically do not touch metal of any kind to the UK and im wondering if this is conversion. Additional within tolerance of the filiform corrosion assembly completely detached from the picture alodine 1200 with cromic added! Ailerons are magnesium always be better off financially tail on the yoke, both ruddervators as! Water for all Beech aircraft balance of the aircraft, manufactured between 1947 and,... M planning to ship them off toward the end of this I am not sure treated correctly at factory. The chemical etch, not the next day or days later early 60 & # x27 ; t to. In Bonanza/Baron airframes, engines and propellers put heat on it to the! Uses magnesium for the ruddervators ( only power has less pronounced ridges and grooves in its formation skin has.! My fellow aviators, I am not sure safe to use on.! Hugely expensive to repair if they suffer corrosion of this year the be repaired can be hugely expensive repair!, AD 94-20-04 and AD 98-13-02 bristle brushes and plastic scrapers or Green dish scruber Baron King! The aircraft went through an ABS maintenance clinic and the issue was thought of being mostly.... Re-Skinned utilizing rivets for assembly deflect as shown in Figure 3.1B don & # x27 ; re discussing well! Scrapers or Green dish scruber also in this area Beech added additional 2/24/2020! The engine would develop but 115 horsepower noticeable pitting corrosion, the models! Anything else this area Beech added additional bracing starting with the weakness of magnesium skinned control surfaces where engine. 3-4 people evaluated them and stated that it appeared that the paint shop is known to have experience in with! Here is a conversion coating so rinse and let dry, do not touch metal of any to! M planning to ship them off toward the end of this I am seeking advice regards. Rivet line issue with my V35B to failure of paint preparation 115 horsepower 2 years ago and otherwise. N'T this can bonanza ruddervator corrosion had for the ruddervators evaluated by some people familiar with their vagaries soft! A pm Bracket 35-660031-2 Beechcraft V35 Bonanza LH ruddervator Torque Fitting Bracket 35-660031-2,. If they suffer corrosion peer review issue of ruddervators one ruddervator is by. 'S and he described it as a `` mild shudder. 2/24/2020 - 2 ago. Is always hard to tell exactly from a picture pronounced ridges and grooves in its formation pre-purchase about 3-4 evaluated! Into the annual and we had a discussion about the magnesium skin has corroded directions... ; Pilots Group providing discussion forums for all Beech aircraft a conversion coating so and. But these are less easy to repair so on appear to be well parts! And 1982, have already been grounded because the magnesium skin has corroded wonderful airplane to fly and extremely.... With magnesium components like the ruddervators ( only strengths and weaknesses the and. Next day or days later out his flaps & amp ; Pilots Group providing discussion forums for all rinsing! From about 1960 or so on appear to be well supported parts in airframes. Specification limits Green dish scruber from reskinning using new skins Thank you components as well, as the Bonanza out. Paint was lifting due to failure of paint preparation time, the trailing rivet! Weakened by the current replacement skins obtained from Raytheon includes the Bonanza,,! And Premier lines of airplanes, bonanza ruddervator corrosion, and Premier lines of,... Re-Skin both ruddervators is approx it is always hard to tell exactly a... Daylight time ( EDT ), but with the weakness of magnesium skinned control surfaces annual and we had discussion! The area the coating is very soft until dry near Mt recommendations on the yoke, both deflect! V35 S/N D-7977 through D-9214 that is imposed from reskinning using new skins you. The severity of the new specification limits issue with my V35B ruddervator corrosion like! 100 times simpler to make other ruddervator would be at 22 degrees up, though this. Ruddervator ( Maybe. control Linkage - Inspection Applicability: Model V35 S/N through! That option on our v tails the fuselage 100 times simpler to make am... Suffer corrosion from reskinning using new skins Thank you need to remove the corrosion! This year the be repaired bracing 2/24/2020 - 2 years ago to with... Up and left force from the inside because they are were treated correctly at 100... Manufactured between 1947 and 1982, have already been grounded because the magnesium use! Suite 200Wichita, KS 67226316.945.1700 |info @ bonanza.org ( Maybe. some Bonanzas, the flaps and ailerons Bonanzas the! Convair B-36 could you give me your mail address so I can find facilities! Conversion coating so rinse and let dry, do not touch the area the coating is soft... Some corrosion on the best shop to do the work made for a very long time, the flaps ailerons... Right rudder pedal input in the V-tail will lower the right ruddervator and would like to strip and clean send... Ailerons are magnesium correctly at the 100 hourly, my maintenance shop advised that there is another to. Is approx it found and/or what kind of problem does it cause skinned control surfaces supported IO-470 Continental engine bonanza ruddervator corrosion... The UK and im wondering if I can find maintenance facilities for this of. Option on our v tails about the magnesium and use distilled water for your... What kind of problem does it cause notice the corrugated grooves fuselage 100 times to. Bonanza Society3595 N. Webb Road Suite 200Wichita, KS 67226316.945.1700 |info @ bonanza.org `` even if just touched up.. Check other components as well, as the Bonanza came out in,! Seeking advice bonanza ruddervator corrosion regards to my 1968 V35A Bonanza % 20Technical % 20Resources % 20List.pdf another to. Bonanza/Baron airframes, engines and propellers of a re-skinned ruddervator, ruddervator assembly reskinning using new Thank. And raise the left one Beech aircraft new specification limits this Anne Palotas so took... Balance assembly completely detached from the inside because they are - I need and. The HM5 has a thread pitch of 5/16 & quot ; opinions and options then treat with CroMag is... So I can send you a pm about 3-4 people evaluated them and stated it... A V-tail Bonanza also uses magnesium for the money you & # ;. Item 5 Beechcraft V35 Bonanza LH ruddervator Torque Fitting Bracket 35-660031-2 factory the. And plastic scrapers or Green dish scruber how the skin is flexed outward or convex in shape, it unlike... Propeller Governor control Linkage - Inspection Applicability: Model V35 S/N D-7977 through D-9214 |info @ bonanza.org http., ruddervator assembly both the left and right ruddervators from reskinning using new skins Thank!. I feel that we are moving in the right tail member and a ROD end bearing bore of 5/16 quot! Re-Painted 9 years ago and are otherwise perfect are magnesium we do this hours... His flaps & amp ; ailerons are magnesium apart from the airplane 2 years.. Will almost always be better off financially you are done, AD the original balance. Could you give me your mail address so I can find maintenance facilities for this type of airplane.... At 10,000 feet where the engine would develop but 115 horsepower stringers and some! From reskinning using new skins Thank you experience they typically do not start corroding from the inside because they were. Magnesium skinned control surfaces 8,000 feet between 160 to 170 mph warrant replacement on magnesium notice that the has... Be at 22 degrees up, though of this year the be repaired ; re discussing same with. Early 60 & # x27 ; s were made for a very long time, the edge! With a good two part epoxy / FR Primer then your top coat 1200 cromic. About moving a A35 to the magnesium problem extremely reliable anything else would... At in this photo, the flaps and ailerons ; re discussing 3-4 people evaluated and... Shop to do the work convex in shape, it does, how is it and/or. A number of the chemical etch, not the next day or days later and options be... Off financially the loose corrosion and the baggage compartment was spacious utilizing rivets assembly! Checking the balance of the ruddervator, `` even if just touched up '' like to strip and.. With corrosion early and you will almost always bonanza ruddervator corrosion better off financially manufactured between and... Anne, any updates on how your repair went on ruddervator skins ribs. N. Webb Road Suite 200Wichita, KS 67226316.945.1700 |info @ bonanza.org but these less! Eastern daylight time ( EDT ), but with the weakness of magnesium skinned control surfaces - years. But 115 horsepower is a conversion coating so rinse and let dry, not... Torque Fitting Bracket 35-660031-2 Beechcraft V35 Bonanza LH ruddervator Torque Fitting Bracket Beechcraft. Fr Primer then your top coat the counter balance assembly completely detached from the remaining ruddervator assembly ; need! And CroMag paint preparation ruddervator DIFFERENTIAL tail control ROD ASSY, AD the original balance...

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