Which class requires a prescription from an APA or above?

The requirement for a prescription from an Authorized Personnel Authority (APA) or above is specifically associated with Class 2 medical certification. Class 2 medical certificates are typically needed by pilots who are involved in functions that require a higher level of medical scrutiny, such as commercial pilot operations. As such, to ensure that the pilot meets the necessary medical standards for safety, a prescription from a qualified authority is required.

Class 1, for instance, pertains to airline transport pilots and may have additional health requirements but does not specifically mandate a prescription from an APA. Class 3 is usually related to private pilots, which have less stringent medical requirements and do not necessitate a prescription. Class 4 does not exist in terms of aviation medical classifications, further confirming that Class 2 is indeed the correct choice.

Understanding these classifications is crucial for aviation personnel to maintain compliance with regulatory standards and ensure safety in operations.