Always had a problem with my GPS in my KR-2 not operating on aircraft power, but ok on internal batteries. Always made a note to trouble shoot that when I got a chance. Did not need GPS on first flights over the airport. Today while hooking up power for the new flap actuator, I found 2 each AN970-3 fender washers on the power control printed circuit board. One was laying loose on top of some components; no problem there, but some bouncing around could create some excitement. The second washer was wedged firmly between a grounded brace part of the power panel and the output terminal on the GPS power toggle switch. So, every time GPS power was switched on, the electronic circuit breaker would trip and no power for the GPS. Removed the offending washers and all is well. Have no idea how these two big washers got there. Stuff happens. So, have possibly toned down the level of excitement for subsequent flights.
Sid Wood Tri-gear KR-2 N6242 Mechanicsville, MD, USA
