Originally Posted by
ECHO24
Are you an actual A&E? Aircraft spark plugs are inspected at intervals recommended by the manufacturer. They have to be replaced (and logged) when out of limits as measured by an erosion gauge. That's so an engine doesn't develop a miss-fire and subsequent loss of power, potentially resulting in a loss of altitude and impact with the ground killing all on board.
Echo, I do understand the point your driving at here, at present there are no TBO requirements for RC engines, no mandated Annual inspections of RC aircraft, and manufacturers have no average life expectancy stats on servos. But please remember, this whole regulation business is brand new to our hobby, and the FAA is trying to establish what it's been mandated to do by following it's already established operation regarding full scale aircraft. Logbooks are a first step, and I do believe that there will be future guidance on exactly what should be logged and when.