The Federal Aviation Administration placed more than 10,000 employees on furlough as the US government shutdown entered its first full workweek. Air traffic control operations continued under contingency plans, while essential services remained operational due to their deemed necessity. However, most administrative functions and non-essential support services were suspended until new funding is approved. According to AeroTime, the National Air Traffic Controllers Association warned that repeated funding lapses exacerbate fatigue and retention issues in the workforce. Industry groups and labor organizations have expressed concerns about the potential impact of short shutdowns on aviation operations.