FAA Activates Special Procedures as OSH26 Traffic Backs Up at Wittman

Heavy inbound traffic to EAA AirVenture Oshkosh 2026 is backing up along the famed Fisk arrival corridor, as Wittman Regional Airport (KOSH) activates special FAA procedures and temporary runway-taxiway configurations to manage the surge. The congestion, documented in recent operational footage from aviation commentator Juan Browne of the blancolirio channel, underscores the intense pressure on air traffic control during the world's largest aviation gathering.

FAA Operational Framework

Under the FAA's 2026 Oshkosh flight procedures, VFR arrivals must use the Fisk arrival, entering at ATC-assigned transition points and sequencing via Ripon and the railroad tracks before reaching the field. To maintain safety during peak volume, controllers are employing metering techniques along the corridor — requiring aircraft to hold specific speeds and spacing. Pilots are required to obtain the Arrival ATIS on 125.9 at least 60 miles out and monitor Fisk Approach on 120.7.

Capacity Management

To absorb arrival surges, Wittman Regional has converted taxiways into temporary runways, a logistical feat that significantly increases throughput. Even so, scheduled nightly closures from 8 p.m. to 7 a.m. CT — combined with airshow windows and Temporary Flight Restrictions — routinely create arrival bottlenecks. Pilots should be prepared for holding patterns or diversions to satellite airports, including Fond du Lac (KFLD) and Appleton (KATW), when the field reaches saturation.