The airport traffic pattern is a standardized path that helps aircraft take off, land, and sequence safely around a runway. Student pilots learn the pattern because it organizes the busiest part of a flight into predictable legs and radio calls. A top-down view makes the pattern easier to understand because each turn, altitude change, and runway alignment can be seen as part of one circuit.
Most patterns are rectangular, with the runway forming one long side of the flow.
Key Facts
- A standard traffic pattern is usually flown with left turns unless the airport publishes right traffic.
- Typical pattern altitude for small piston aircraft is about 1000 ft AGL, but pilots must check the chart or airport information.
- The five main legs are upwind, crosswind, downwind, base, and final.
- Downwind is flown parallel to the runway in the opposite direction of landing.
- Final is flown aligned with the runway centerline in the landing direction.
- Descent planning can use rate of descent = altitude to lose / time available.
Vocabulary
- Upwind leg
- The upwind leg is the path flown along the runway heading after takeoff or during a go-around.
- Crosswind leg
- The crosswind leg is the 90 degree turn away from the runway after the upwind leg, usually flown while climbing to pattern altitude.
- Downwind leg
- The downwind leg is the segment flown parallel to the runway but opposite the landing direction.
- Base leg
- The base leg is the segment flown after downwind that turns the aircraft toward final approach.
- Final approach
- Final approach is the segment aligned with the runway centerline just before landing.
Common Mistakes to Avoid
- Turning the wrong direction in the pattern is wrong because standard traffic is usually left unless airport information specifies right traffic.
- Flying downwind too close or too far from the runway is wrong because it makes the base and final turns either rushed or excessively wide.
- Descending before being properly positioned is wrong because it can place the aircraft too low, reduce obstacle clearance, and create unstable spacing.
- Overshooting final is wrong because it can lead to steep bank angles, poor runway alignment, and unsafe corrections close to the ground.
Practice Questions
- 1 An aircraft is flying a left traffic pattern for Runway 27. What compass heading is the aircraft flying on downwind?
- 2 A student pilot is at 1000 ft AGL on downwind and wants to be at 500 ft AGL in 2 minutes by base. What average descent rate is needed in ft/min?
- 3 An airport publishes right traffic for Runway 18. Explain how the direction of turns changes compared with a standard left traffic pattern, and identify which side of the runway the downwind leg will be on.