Old Chub Posted February 15, 2021 Report Posted February 15, 2021 Its hard for me to visualize exactly where this is but a few questions would need to be determined before I would go down the path for re-wing. 1. Is there corrosion present or corrosion damage to any major structural elements of the wing? From the photo it appears to be on some sheet metal doubler. 2. What is the failure mode in the case of this corrosion damage resulting in a failure or lack of load carrying capability? Poster indicates an F model. Is this structural area the same dimensions and stack ups as later models with higher loading for the same area (establishing margin). Discussing a repair with a DER as Paul suggests (if Mooney is not available for engineering support) may be your best bet for finding a solution. It could possibly be a an area that has plenty of margin and you can clean up what you can and inspect on a regular basis. 2 Quote
carusoam Posted February 15, 2021 Report Posted February 15, 2021 Great input OC! If having difficulty finding a local mechanic with this depth of metal knowledge... It may be a really wise decision to go forward with contacting the factory with the pics and details... There is a pretty straight forward way to make contact though their newish website... they have more than two strong MSer contacts... That would make a great entryway to a solid solution... Let us know if you want help making the contact... Best regards, -a- Quote
Guest Posted February 16, 2021 Report Posted February 16, 2021 That looks well beyond normal limits. Repair or replacement are the options. Clarence Quote
67 m20F chump Posted March 15, 2021 Author Report Posted March 15, 2021 I was able to locate a wing. David from Airmods even was willing to deliver it to me. I can’t say enough good things about him and his wife. He even looked over my work and gave me some pointers. 4 Quote
carusoam Posted March 16, 2021 Report Posted March 16, 2021 I thought I would be helpful and spin the pic... oops.. +1 for Dave at AirMods... few people know that much Mooney detail in NJ... Best regards, -a- Quote
JWJR Posted March 17, 2021 Report Posted March 17, 2021 If you replace the wing have the old one put in a jig and stressed until it lets go. At that point in time you will realize that you just wasted 12-20 K. Take it to the shop that signed it off originally for inspections and corrosion inspections each year to stay on top of it and keep on flying. Your wasting time and money that could be used for fuel. Sent from my iPhone using Tapatalk Quote
67 m20F chump Posted March 17, 2021 Author Report Posted March 17, 2021 I thought about doing that. I wasn’t worried about the wing breaking. I would never have sold a plane to somebody knowing it had a problem. It will cost me some money now but I plan on keeping it for a long time and pain is temporary. 3 Quote
A64Pilot Posted March 18, 2021 Report Posted March 18, 2021 (edited) On 2/14/2021 at 7:40 PM, Old Chub said: Its hard for me to visualize exactly where this is but a few questions would need to be determined before I would go down the path for re-wing. 1. Is there corrosion present or corrosion damage to any major structural elements of the wing? From the photo it appears to be on some sheet metal doubler. 2. What is the failure mode in the case of this corrosion damage resulting in a failure or lack of load carrying capability? Poster indicates an F model. Is this structural area the same dimensions and stack ups as later models with higher loading for the same area (establishing margin). Discussing a repair with a DER as Paul suggests (if Mooney is not available for engineering support) may be your best bet for finding a solution. It could possibly be a an area that has plenty of margin and you can clean up what you can and inspect on a regular basis. I would do this, but it’s going to take a structures DER and your going to spend some money determining load paths and stresses etc., and even then in truth it’s going to be an educated guess, so a good DER will leave good margin. But he’s going to need some measurements of course, unlikely he will travel to the airplane. 10% is a generic answer for anything, like 4130 tubing for example and takes nothing into consideration. ‘If you had bought an annual and not a pre-buy then you would have some recourse for them missing it, but as a pre buy isn’t a defined term, it has no standards that a shop can be held to. Edited March 18, 2021 by A64Pilot Quote
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