Jeff, No not specific to Ercoupes, but the subject is always pertinent, especially when folks are fueling their airplanes from 5 gal cans, etc, and airplanes sit out of doors.
There seems to be a propblem with completely draining all water from wing tanks on some Ercoupes - tail high ? I have never had a problem with my coupe S/N 853, and when refinishing drained the tanks dry - no liquids left in the tanks, so it appears I can get all liquid -water or gas out of my tanks. But, every spring we seem to have a rash of failures attributed to water. The copy of my letter to Skip Carden was a result of a crash and destruction of a coupe that was found to be caused by water in the fuel system. The airplane had been flown a couple times that day, as I remember, and engine stopped after several short trips. This stimulated me to write about really checking before every flight - not just the first of the day, because if there is excessive water in the system (there is always some water in fuel systems due to ccondensation), then the gascolator could become full, and pass water to the carburetter- stopping the engine. Apparently this is what happened in the mentioned flight and crash. Hope this relieves your concern - but always be concerned about water in any airplane. You can't pull over to the side of the road when the engine quits. Fly Safe - Have Fun ! Harry Francis 93530 BCB
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