Final answer:
Crew intervention may be necessary when the FADEC system detects a fault during automatic start, depending on the nature of the fault and the aircraft's procedures. The system is designed to manage engine controls automatically, but pilots must be ready to intervene and troubleshoot if needed.
Step-by-step explanation:
When the Full Authority Digital Engine Control (FADEC) system detects a fault during the automatic start of an aircraft engine, whether crew intervention is required or not can vary depending on the specific nature of the fault and the protocol set by the aircraft manufacturer.
If the FADEC system is functioning correctly, it is designed to handle most of the routine tasks required for engine management, including startup, without the need for pilot intervention. However, in the case of detecting a significant fault, the system typically aborts the start, and this is when crew intervention may become necessary. The pilots would then need to assess the situation, consult the appropriate checklists, and possibly troubleshoot the issue based on the information provided by the FADEC. The flight deck crew would also communicate with maintenance personnel as needed to resolve the fault before proceeding.
It's essential to note that modern aircraft equipped with FADEC allow for increased efficiency and safety. The system continuously monitors engine parameters and can make split-second decisions to prevent damage to the engine. But pilots are trained for scenarios where automation may fail or not have the capability to rectify the issue, which is why crew intervention in case of a fault during an automatic start cannot be entirely ruled out. Pilots' understanding of the FADEC system and procedures for manual override, if required, are therefore critical components of their training.