Final answer:
An aircraft should be flown outbound in a holding pattern instead of a procedure turn for one complete turn, typically one minute at or below 14,000 feet and one and a half minutes above 14,000 feet unless specified otherwise by approach charts or ATC instructions.
Step-by-step explanation:
When considering how long an aircraft should be flown outbound when performing a holding pattern instead of a procedure turn, it is important to adhere to the guidelines established by the aviation authority or the specific procedures for the individual approach. Typically, the outbound leg in a holding pattern used for this purpose is timed according to the type of hold and altitude.
In conditions where a procedure turn is not designated or for radar vectored approaches, when ATC directs a pilot to conduct a holding pattern instead of a procedure turn, the pilot should maintain the holding pattern for one complete turn, which usually involves one minute at or below 14,000 feet and one and a half minutes above 14,000 feet. However, if approach charts or ATC provide specific instructions, those should be followed. For instance, the chart may specify a certain time to fly outbound before turning inbound to intercept the final approach course or ATC might assign a certain time based on traffic and sequencing needs.
The key to executing an accurate holding pattern lies in adhering to the pre-determined holding procedures and maintaining constant communication with Air Traffic Control for any updates or changes to your clearance. Always be prepared to adapt to instructions provided by ATC that may alter the typical holding time based on current air traffic and weather conditions.