Which direction do traffic pattern turns go at an airport with no indication otherwise?

The standard traffic pattern uses left-hand turns, and that is the default at any airport unless right traffic is specifically indicated. The indication comes from three sources: traffic pattern indicators arranged around the segmented circle on the field, the notation RP followed by the runway number in the chart supplement, and, at towered fields, controller instruction. Right traffic exists for specific reasons — terrain, noise abatement over a residential area, or a parallel runway or nearby airport whose patterns would otherwise conflict — so it is not random and it is documented. For a remote pilot the point is where descending aircraft will be. Assuming left traffic when a runway is right traffic puts the pattern on the opposite side of the field from where the operation was planned, which can place aircraft on base and final directly over a site chosen precisely to be clear of them.

Standard traffic pattern turns are to the left, and right traffic applies only where specifically indicated by pattern indicators, the chart supplement notation, or controller instruction.

The standard traffic pattern uses left turns. Right traffic is indicated by traffic pattern indicators at the segmented circle, by RP notation in the chart supplement, or by controller instruction, and exists for terrain, noise or conflicting-pattern reasons.

Left Unless Told Otherwise. Right traffic is always announced, never assumed.

The wind selects the runway; the runway's indication selects the turn direction. Keep the two decisions separate.

• •Assuming left traffic without checking for RP notation
• •Believing wind determines turn direction
• •Thinking pattern direction varies by arriving aircraft