FAA Powerplant Written Practice Test

Which maintenance requirement applies to the breakerless capacitor discharge ignition systems used on many Rotax engines?

1. Regular system checks

2. Complete maintenance free

3. Replacement of parts every few years

4. Periodic battery checks

The correct answer is: Complete maintenance free

The breakerless capacitor discharge ignition systems used on many Rotax engines are designed to be maintenance-free under normal operating conditions. This means that they do not require regular servicing or replacement of components as part of routine maintenance. The advanced design of these ignition systems minimizes wear and tear associated with traditional ignition systems that may use points and breakers, which can degrade over time and necessitate frequent adjustments or replacements. These systems employ solid-state electronic components that offer higher reliability and are less susceptible to wear, which is why they are regarded as virtually maintenance-free. Users can typically expect them to function effectively for long periods without intervention, provided that they are kept within the manufacturer's operational limits and that the overall engine is well-maintained.