Runway 01C at KIAD
Runway 01C/19C at Washington Dulles International Airport (KIAD) in Washington, DC is a 11,500 ft, lighted, conc-g runway oriented 001°/181°. The runway is 150 ft wide. SkyMeter has observed 2,860 landings and 1,225 departures on this runway over the last 30 days, with approximately 0.3% of arrivals resulting in a go-around (9 events). Trace data shows an average final-approach slope of 2.2°, touchdowns averaging 635 ft past the threshold, a typical touchdown ground speed of 128 kt, a 2.0 kt average crosswind component, a 9.1 kt average headwind.
Runway 01C/19C at Washington Dulles International Airport (KIAD) in Washington, DC is a 11,500 ft, lighted, conc-g runway oriented 001°/181°. The runway is 150 ft wide. SkyMeter has observed 2,860 landings and 1,225 departures on this runway over the last 30 days, with approximately 0.3% of arrivals resulting in a go-around (9 events). Trace data shows an average final-approach slope of 2.2°, touchdowns averaging 635 ft past the threshold, a typical touchdown ground speed of 128 kt, a 2.0 kt average crosswind component, a 9.1 kt average headwind.
Runway at a Glance
Arrival Volume
2,860 landings observed on Runway 01C in the last 30 days, alongside 1,225 departures.
Low Go-Around Rate
0.3% of arrivals at Runway 01C result in a go-around (9 in the last 30 days).
Peak Hour
Busiest landing window observed at 21:00 with 18 arrivals on the recent sample.
Average Touchdown Zone
Aircraft touch down on average 635 ft from the threshold on Runway 01C.
Prevailing Wind & Gust History
Over the past 365 days, winds at KIAD have prevailed from the south (180°), accounting for roughly 17% of windy observations. Average wind speed sits at 5.1 kt with peak gusts to 58 kt. Strong-wind days are infrequent here.
Light Crosswind Component
Average crosswind on landing is 2.0 kt at touchdown, measured against runway 01C alignment.
Approach Slope
Final-approach slope averages 2.2° on Runway 01C, shallower than the standard 3°.
Landing Behavior and Touchdown Performance
The metrics below are computed from ADS-B trace data observed at Runway 01C over the last 30 days. Each value is shown only when at least 10 valid samples were available; sparse cells are hidden rather than estimated.
Hourly Landing Distribution
Recent observed landings on Runway 01C grouped by hour-of-day (UTC).
Go-Around Analysis
A go-around occurs when a pilot aborts a landing attempt and initiates a climb to return for another approach. While go-arounds are a normal safety procedure, their frequency and causes provide insight into operational challenges at specific runways. Runway 01C experienced go-arounds in 0.3% of arrivals over the last 30 days (9 events of 2869 attempts).
Recent Go-Around Events
These events represent normal safety procedures and do not indicate operational deficiencies.
Go-Around Causes Distribution
Environmental factors dominate go-around causes, indicating that operational procedures remain sound.
Approach Types and Categories
Aircraft approach runways using different procedures based on weather conditions, visibility, and available navigation equipment. An Instrument Landing System (ILS) approach provides precision horizontal and vertical guidance using ground-based radio signals, enabling aircraft to land in low visibility conditions. Visual approaches require pilots to maintain visual contact with the runway and surrounding terrain, typically used during clear weather. Area Navigation (RNAV) approaches use GPS technology to guide aircraft along specific flight paths.
Approach Categories Explained
Category (CAT) classifications define minimum visibility and decision height requirements for instrument approaches. Higher categories enable operations in lower visibility conditions.
Wind and Environmental Factors
Wind conditions directly impact runway operations, influencing approach difficulty, landing performance, and runway selection. Runway 01C benefits from favorable wind alignment, with prevailing winds creating minimal crosswind components for most operations. Average wind speeds of 12 knots pose no operational constraints for commercial aircraft.
24-Hour Wind Pattern
Wind patterns show typical diurnal variation with stronger winds during midday hours.