Final answer:
The maximum allowable beacon target displacement specified by an air traffic manager is typically 1 mile. This standard ensures the safety and accuracy of aircraft navigation within controlled airspace.
Step-by-step explanation:
The question pertains to the field of aviation and air traffic management, specifically regarding the maximum allowable beacon target displacement that an air traffic manager can specify. The correct answer to this question is that, according to most standardized regulations, the maximum allowable distance for beacon target displacement is usually 1 mile. This means that any deviation beyond this range would be considered unacceptable and could potentially lead to navigational confusion and safety issues.