ASTRA: A Scalable Next-Generation ATCO Training Simulator with Autonomous Simpilots

ASTRA is a next-generation air traffic control operator training simulator that automates the roles of simpilots using a locally adapted speech recognition pipeline. It achieves a significant reduction in Word Error Rate (WER) from 107.80% to 23.45% for Singaporean-accented aviation speech and implements an AI-assisted performance evaluation framework with scores of 91.7% for accuracy, 88.2% for brevity, and 86.9% for completeness. This system enhances training scalability and standardization while alleviating the burden on human instructors, making it a valuable tool for practitioners in aviation training and simulation.