During a manual start, what function does the FADEC perform?

The correct answer highlights the specific role of the FADEC (Full Authority Digital Engine Control) during a manual start process. During a manual engine start, the FADEC provides essential functions such as monitoring the engine parameters and detecting any faults that may occur during the startup sequence. It is capable of identifying anomalies like incorrect rotation speed or abnormal temperatures, which can indicate a potential start failure.

While it does offer fault detection, the system does not have the capability to automatically abort the start or engage the crank sequence typically available during an automatic start sequence. This limitation is crucial; operators must manage the manual start process more actively, relying on the ECAM (Electronic Centralized Aircraft Monitor) to notify them of any issues without the automated corrections that would occur in automated scenarios.

This is why the correct answer emphasizes the FADEC's role in fault detection without automatic corrective actions. Understanding this distinction is important for pilots and crew members as it affects their procedures during engine start and how they should respond to any faults indicated by the system.