Definition
A procedure turn is a charted maneuver used to reverse direction and align the aircraft with the inbound course of an instrument approach, while losing altitude as required. It is depicted on instrument approach charts and must be flown on the side shown, within the distance specified from the fix.
Plain English
A pre-planned turn that flips the aircraft around so it ends up heading the right way and at the right altitude to start an instrument approach.
Context Anchor
Seen on instrument approach charts, in approach briefings, and in FAA acronym or abbreviation lists as PTN.
Derivation
Procedure' derives from the Latin 'procedere' meaning to advance or go forward, paired with 'turn' to describe a prescribed directional change developed in early instrument navigation standards.
Why Pilots Care
It provides a reliable method to reverse course and intercept the final approach segment while maintaining required obstacle clearance during instrument approaches.
Intuition Check
A procedure turn is not just any turn made during a procedure. In instrument flying, it means a specific charted maneuver used to reverse direction and get established on the approach path.
Example Sentence 1
The approach chart showed a procedure turn on the north side of the inbound course, so the pilot flew outbound for one minute before starting the reversal.
Example Sentence 2
During the missed approach briefing the crew reviewed the PTN entry heading to ensure proper alignment on the next approach attempt.