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AA-1B. Fuel is slowly disappearing from the right tank with aircraft parked. About 1/4 tank over approx. 10 days. There is NO outside indication of a leak (under wing and fuselage) and no gas smell.
Where is the fuel going ?
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Ware, I wonder if your neighbor who is parked next to you might be helping himself to some expensive avgas? 😉
Seriously, 1/4 tank of 10 days seems pretty excessive, especially with no outside indications. Assuming you have 38 gallon tanks, then one wing would hold 19 gallons. 1/4 of that would be 4.75 gallons lost over 10 days or, .475 gallons per day. That’s a roughly half gallon over 24 hours or 0.0197 gallons per hour which I would think would be pretty hard to detect.
I had a similar issue with my fuel tank scupper drain lines being cracked and were “weeping”. It wasn’t enough to make a full-fledged drip but it WAS enough to notice if I rubbed my finger on the fuel drains and smelled the avgas. May want to see if yours have deteriorated?
Keep us updated
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My wing tanks only hold 11 gal each, so the loss is a bit less. Although I did change the drain (on the leaky side) about 3 months ago because it appeared to be weeping, I will check it again.
Thanks for the feedback.
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