Engines shall operate at what percentage of the CG Load when conducting performance tests?

The correct range of 80-90% of the Continuous Rating (CG Load) during performance tests is designed to ensure that the engines are assessed under conditions that closely mimic operational requirements. Operating in this range allows for a thorough evaluation of the engine's reliability, efficiency, and performance characteristics while minimizing the risk of overstressing the equipment.

This testing percentage represents a balance where the engines demonstrate their capabilities under significant but safe loads. By focusing on this range, the performance tests can reveal potential areas for improvement and confirm that the engine can operate effectively under normal conditions encountered during typical usage.

Operating below this range, such as in the 50-60% or 70-80% categories, may not provide an accurate representation of engine performance under full operational conditions, while testing at 90-100% could push the engine beyond typical stress levels, potentially rendering test results less reliable or causing damage to the engine. Thus, the 80-90% range serves as the optimum percentage for comprehensive performance assessment during testing.