I've owned my 415c for 1 1/2 years and 140+ hours. I have one recurring problem with failure of the charging system. The generator installed now is the third since I bought the plane as is also the voltage regulator. It did not work when I bought the plane which accounts for the first generator and regulator change. Delco Remey then replaced one generator when it failed again after 5 or 6 hours. When they got my returned generator, they informed John Cooper there was nothing wrong with it, but the new generator and regulator worked for about 100 hours and then started working intermittently. Symptoms were that it would not charge until about 10-15 minutes into a flight, then it would start charging again. On the last flight it never started charging.
Wire continuity, checking for a grounded wire and checking the NEW master switch do not show any abnormalities. When the field terminal is grounded, and engine run up to 2200 rpm, there is less than 1.5 volts indicated on the armature. If anyone has any advice on why 3 sets of generator and regulators would fail in such a short time, please advise. Thank You. Bill Chalker N94191
