Runway 12 at KACK
Runway 12/30 at Nantucket Memorial Airport (KACK) in Nantucket is a 2,696 ft, unlit, asphalt runway oriented 107°/287°. The runway is 50 ft wide. SkyMeter has observed 198 landings and 1 departures on this runway over the last 30 days, with approximately 0.0% of arrivals resulting in a go-around. Trace data shows an average final-approach slope of 3.1°, touchdowns averaging 4,833 ft past the threshold, a typical touchdown ground speed of 148 kt, a 10.8 kt average crosswind component, a 8.6 kt average tailwind.
Runway 12/30 at Nantucket Memorial Airport (KACK) in Nantucket is a 2,696 ft, unlit, asphalt runway oriented 107°/287°. The runway is 50 ft wide. SkyMeter has observed 198 landings and 1 departures on this runway over the last 30 days, with approximately 0.0% of arrivals resulting in a go-around. Trace data shows an average final-approach slope of 3.1°, touchdowns averaging 4,833 ft past the threshold, a typical touchdown ground speed of 148 kt, a 10.8 kt average crosswind component, a 8.6 kt average tailwind.
Runway at a Glance
Arrival Volume
198 landings observed on Runway 12 in the last 30 days, alongside 1 departures.
Peak Hour
Busiest landing window observed at 16:00 with 10 arrivals on the recent sample.
Average Touchdown Zone
Aircraft touch down on average 4,833 ft from the threshold on Runway 12.
Prevailing Wind & Gust History
Over the past 365 days, winds at KACK have prevailed from the south-southwest (210°), accounting for roughly 16% of windy observations. Average wind speed sits at 10.2 kt with peak gusts to 68 kt. Strong winds (≥20 kt) occur on about 5% of observations — pilots flying into runway 12 should plan for occasional gusty conditions.
Moderate Crosswind Component
Average crosswind on landing is 10.8 kt at touchdown, measured against runway 12 alignment.
Approach Slope
Final-approach slope averages 3.1° on Runway 12, consistent with the standard 3° glide path.
Landing Behavior and Touchdown Performance
The metrics below are computed from ADS-B trace data observed at Runway 12 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 12 grouped by hour-of-day (UTC).
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 12 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.