Final answer:
In aviation, an aircraft should fly outbound for at least 1 to 2 minutes before beginning a standard procedure turn.
Step-by-step explanation:
In aviation, when making a procedure turn, the aircraft should fly outbound for at least 1 to 2 minutes before beginning a standard 45-degree or 80/260 procedure turn. The specific time depends on the aircraft's speed, which is typically around 2-3 nautical miles per minute.