What is the maximum thrust loss due to EFC failure?

The maximum thrust loss due to EFC (Electronic Fuel Control) failure is typically regarded as 40%. This is an important aspect to understand because the EFC plays a crucial role in managing the fuel flow to the engine, thereby directly affecting the thrust produced. When the EFC fails, the engines may not be able to operate at optimal efficiency, resulting in a significant reduction in thrust.

The specific value of 40% has been determined based on various operational scenarios and testing, reflecting the most severe situations where the EFC is unable to adjust fuel delivery as needed for varying power demands. Having this understanding is critical for pilots during flight operations, as they need to be prepared for the implications of an EFC failure and how it impacts aircraft performance.

In typical failure scenarios, pilots can expect a notable yet manageable amount of thrust reduction, rather than a complete loss. This knowledge aids in making informed decisions about handling the aircraft in such situations.