201er Posted January 6, 2018 Report Posted January 6, 2018 Found some blue under tie down ring after annual. Maybe due to cold. What to do? Quote
EricJ Posted January 6, 2018 Report Posted January 6, 2018 Pop the inspection plate off and see whether it's the fuel sender gasket leaking. Might be an easy fix. Quote
carusoam Posted January 7, 2018 Report Posted January 7, 2018 Expect that it is coming from an uphill location. The cold weather (<20°F) keeps it from evaporating much. So if you see the blue stain now. There may be a much bigger stain, closer to the source, that was evaporating before it could get out... Another thing that makes this different this time.... Have you filled the tanks and let them sit full for a couple of weeks? Broken down sealant often occurs at the top of the tank, where sun/heat damage occurs. If you always fill the tank the same day you are flying, you may never notice the small leak that occurs over time... Start with the inspection panel outside where the tank is known to exist. It is bad form to accidently open an access panel into the tank... pictures inside the wing might be pretty helpful. Thoughts of a PP only, not an outdoor storage expert any more... Best regards, -a- Quote
Yetti Posted January 7, 2018 Report Posted January 7, 2018 (edited) It think the tie point is uphill from the tanks. don't fill that tank as full Edited January 7, 2018 by Yetti 1 Quote
Marauder Posted January 7, 2018 Report Posted January 7, 2018 Mike - the fuel sender is forward and to the inside of the tie down ring. I would pull those panels and use a borescope to see if you can find the source. These leaks can migrate a good distance from their source. Sent from my iPhone using Tapatalk Pro Quote
Piloto Posted January 8, 2018 Report Posted January 8, 2018 Tie down ring leaks usually occurs on Mooneys with long range tanks. If this is the case do not unscrew the ring until the long range tank is empty. To temporarily fix it unscrew the ring, clean the screw and the hole with MEK. Apply PRC 1422 sealant to the ring and screw it in. Allow one day to cure before putting any fuel. For a permanent fix to allow installing the jack pads without emptying the tanks do the following: 1. Empty the tanks 2. Remove access panel behind tie down ring 3. Clean the tie down ring inside bracket with MEK 4. Apply PRC 1422-B2 on top of the bracket to build up a block of sealant. 5. Let it cure for a day before installing the cover. With fuel in the tanks there should be no leak even with the tie down removed. José 4 2 Quote
LucasC Posted December 2, 2019 Report Posted December 2, 2019 My tie-down was leaking from crack in sealant inside tank 2 Quote
carusoam Posted December 3, 2019 Report Posted December 3, 2019 Great pic, Lucas! I think I just learned what the tie-down looks like from the other side... Thanks for sharing the details... Best regards, -a- 1 Quote
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