JPLosman Posted August 3, 2023 Report Posted August 3, 2023 Hi all. New MS’er here. Just acquired a ‘66E earlier this year. As part of cleaning up and upgrading some nits and nats through my first couple months of ownership, I decided to install two new GI-275s and a GFC500 (the dangers of saying “might as well” while the plane is cracked open). The plane currently has the original stock E yokes, but installing the required AP switches in the stock yokes would require some clumsy placement. Does anyone know where I can source modern 201-style yokes + shafts to replace the old yokes? I reached out to Mooney directly inquiring about the retrofit yoke package (p/n 940021-507) but they haven’t responded to me and not sure if they’re making them anymore. Is eBay my only shot here?
KSMooniac Posted August 3, 2023 Report Posted August 3, 2023 eBay, salvage operators like BAS (Beegles) or Wentworth, and keeping an eye on the classifieds here. Sometimes Barnstormers might have some listed discretely or a plane getting parted that hasn't been picked-over. You won't likely be able to reach Mooney directly, but you could try calling a Service Center (such as Maxwell Aviation) and inquire through them... I suspect they might be able to put together a kit, but you likely won't like the price or the lead time. They'll be priced like they're going into an $800k Ultra, not a decades-old E. I have a pilot yoke & shaft only and have been casually looking for a companion so that I could sell a pair for more money. If you're interest in just the pilot side, send me a PM. I'm not certain, but the cross-bar behind the panel that connects to both yokes might need to be changed as well, and if so, you might not be able to upgrade just one side. 1
Skates97 Posted August 3, 2023 Report Posted August 3, 2023 There can be quite a bit that goes into changing them. As Scott mentioned above you may need to change the actual yoke (behind the panel). I wrote up a post when I changed mine. I was able to buy them from a plane that was being salvaged. They don't come up for sale very often and usually go quickly when they do come up for sale. They are pricy, but the difference in how they feel.... 3
PT20J Posted August 3, 2023 Report Posted August 3, 2023 Does Mooney have stock? Probably very expensive, but if you need them NOW and they have stock, that might be the way to go.
gmonnig Posted August 4, 2023 Report Posted August 4, 2023 I too have been wondering what direction to go with the yokes. I was able to wire the PTT where the old wing level button was but when I get the GFC500 installed, I will want newer yokes. The added plate for the GFC500 trim and disconnect looks pretty bad. I have been thinking about doing the Cygnet Aerospace yokes with a proper trim switch and all the buttons where they should be. They make adapters to fit our torque tubes. https://www.cygnet-aero.com/products 1
JPLosman Posted August 4, 2023 Author Report Posted August 4, 2023 15 hours ago, gmonnig said: I too have been wondering what direction to go with the yokes. I was able to wire the PTT where the old wing level button was but when I get the GFC500 installed, I will want newer yokes. The added plate for the GFC500 trim and disconnect looks pretty bad. I have been thinking about doing the Cygnet Aerospace yokes with a proper trim switch and all the buttons where they should be. They make adapters to fit our torque tubes. https://www.cygnet-aero.com/products Very interesting, thanks. I called Cygnet today and they said that the adapter for the older-style shafts is typically considered a minor mod that doesn't require a 337 (although it varies by A&P). Seems installing the Cygnet control wheel on the existing tubes would be easiest approach, versus having to search for a new 201-style yoke/control sheet/shaft. Thanks everyone for the helpful responses above! 1
gmonnig Posted August 4, 2023 Report Posted August 4, 2023 I've seen a couple Mooney with these installed and they look good. A little weird with "Bonanza" style control wheels but functionality takes precedence over looks. Placement of critical autopilot buttons and PTT is very important to me.
Utah20Gflyer Posted August 4, 2023 Report Posted August 4, 2023 You could do what the previous owner of my plane did and build a piece that attaches to the yoke in order to make more room. See attached picture. I am sure it didn’t cost him much. Best part of the 201 yoke conversion is getting rid of the AD for the yoke shaft though.
DAN ISLIP AVIONICS Posted July 15 Report Posted July 15 (edited) Mooney 940021 "Control Wheel Retrofit" new, complete, for sale. Islip Avionics, Inc. (631) 588-3561 Edited July 23 by DAN ISLIP AVIONICS Added complete part number of kit 940021-501 and photo of kit label.
Hradec Posted July 15 Report Posted July 15 4 hours ago, DAN ISLIP AVIONICS said: Mooney 940021 "Control Wheel Retrofit" new, complete, for sale. Islip Avionics, Inc. (631) 588-3561 How much?
67 m20F chump Posted July 16 Report Posted July 16 Check the part number on those shafts to make sure it’s correct for your model. -901 isn’t the part number I need for my 67’ F. I need -501 and -502.
47U Posted July 16 Report Posted July 16 5 hours ago, 67 m20F chump said: Check the part number on those shafts to make sure it’s correct for your model. Always good advice. Note the model effectivity box lists the ‘M20 J, M, R’ and then there’s a previous thread from 2021 that provides some insight.
jetdriven Posted July 16 Report Posted July 16 I have a pair of the yoke shafts that came out of a 77 M20J.
Matthew P Posted July 17 Report Posted July 17 I went with the Cygnet for my M20E, they provide you with an example of the 337, cheaper than changing out the tubes and finding a J-yoke..very happy with mine. I also put the GI-275s and GFC-500 in my plane
jamesm Posted July 18 Report Posted July 18 9 hours ago, Matthew P said: I went with the Cygnet for my M20E how does this work? I went to Cygnet site and didn't see any STC for Mooney's. Does remove the reoccurring AD77-17-04? just curious, James
47U Posted July 18 Report Posted July 18 1 hour ago, jamesm said: how does this work? @Matthew P installed the Cygnet yokes on a 337. No STC. Talk to your IA first, you’ll need buy-in from them. The yoke swap does not change out the yoke shaft, therefore the 500 hr inspection AD is still required. I replaced my yoke shafts lsat summer… ordered them through LASAR and the factory had them in stock. You’ll need to call LASAR for parts. 1
Old Chub Posted July 25 Report Posted July 25 If they were installed on a 337 what was used for approved data? Did you get an FAA FSDO Field Approval ?
Matthew P Posted July 25 Report Posted July 25 2 hours ago, Old Chub said: If they were installed on a 337 what was used for approved data? Did you get an FAA FSDO Field Approval ? Form, fit and function..Cygnent will send examples if you ask, really comes down to the IA.
47U Posted July 25 Report Posted July 25 3 hours ago, Old Chub said: If they were installed on a 337 what was used for approved data? The Cygnet yokes are a PMA’d replacement for Beechcraft… So the logic is, the Cygnet yoke is airworthy on a Bonanza installed by the A&P with a simple logbook entry citing the PMA, but if installed on a Mooney the Cygnet yoke wouldn’t be airworthy? As @Matthew P says, form, fit, function.
EricJ Posted July 26 Report Posted July 26 3 hours ago, 47U said: The Cygnet yokes are a PMA’d replacement for Beechcraft… So the logic is, the Cygnet yoke is airworthy on a Bonanza installed by the A&P with a simple logbook entry citing the PMA, but if installed on a Mooney the Cygnet yoke wouldn’t be airworthy? As @Matthew P says, form, fit, function. Not unairworthy, just easy for regulation pedants to argue that it is unapproved. Clearly there are IA's on both side of that argument, which is not at all surprising. Since 337s are generally not checked by anyone but the IA in most cases, their word goes. 2
Old Chub Posted July 26 Report Posted July 26 I agree with all the statements above and don't think anyone in this case is going to bother. However, and A&P with an IA endorsement can not create approved data for installation. That person can use several ways to get, obtain or reference approved data but can not create out of thin air. I think this is something that is misrepresented as I have seen this referenced several times on MooneySpace.
Keith20EH Posted August 22 Report Posted August 22 I am interested in buying a control yoke from an E if anyone does the upgrade, I like the vintage look, and would like a spare. I just need the control, no pc valve or clock. My pc valve is long gone, and clock still works. No cracks please.
M20F-1968 Posted August 22 Report Posted August 22 As Scott mentioned above you may need to change the actual yoke (behind the panel). You will have to change the part that connects the forward portion of the two yoke shafts. The newer style (and I am referencing the Ovation parts which I used) have bronze bearings and are different from what is in the E. John Breda
Matthew P Posted August 22 Report Posted August 22 On 7/26/2025 at 8:16 AM, Old Chub said: I agree with all the statements above and don't think anyone in this case is going to bother. However, and A&P with an IA endorsement can not create approved data for installation. That person can use several ways to get, obtain or reference approved data but can not create out of thin air. I think this is something that is misrepresented as I have seen this referenced several times on MooneySpace. Form, fit, function...been around a while, especially with older aircraft....haven't heard on one instance where it's been an issue and neither has Cygnet with all the ones they have sold to Mooney drivers
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