At what RPM should the ignition be checked?

The ignition system of the Warrior PA-28A should be checked at 2000 RPM to ensure proper functionality and performance. This RPM is considered optimal as it allows the engine to operate within a range that is high enough to provide a clear indication of the ignition system's performance without reaching an excessively high operational state that could demand greater attention than necessary.

At 2000 RPM, the pilot can effectively assess how the engine responds to the ignition check. If the engine runs smoothly and maintains RPM with each magneto being tested, it indicates that the ignition system is working correctly. Testing at this RPM helps to highlight any potential issues that might not be visible at lower RPMs while also remaining within a safe operational range of the engine's capabilities.

For operational safety, it’s important to conduct the ignition checks within this specified range, as checking at significantly higher or lower RPMs may yield inaccuracies in the engine’s performance assessment.