Final answer:
Crewmembers who fail to complete ACT-E training by the end of their APART period are typically removed from the crew, emphasizing the importance of meeting training deadlines to maintain safety and operational readiness.
Step-by-step explanation:
If RL1 crewmembers fail to complete ACT-E (Aircrew Continuation Training - Enlisted) training by the end of their Aerial Proficiency Assessment & Risk Evaluation Training (APART) period, the standard procedure is to remove them from the crew. The importance of meeting training requirements is critical for maintaining operational readiness and safety standards. Failure to do so typically results in removal from crew duties until the individual can meet the necessary qualifications. Although policies may vary by unit or service, unless an extension is explicitly granted due to exceptional circumstances, the assumption should be that failing to meet training deadlines will lead to removal from flight status. However, it is crucial for crewmembers to understand the specific regulations and policies of their unit or branch.