SkyReady

Williamson Sodus Airport traffic pattern

Pattern altitude at Williamson Sodus Airport (SDC · KSDC) is 1,400 ft MSL · 976 AGL as published by the FAA, and every runway end is standard left traffic.

All of Williamson Sodus Airport — runways, frequencies, charts and live weather

Pattern diagram

Drawn to scale from the FAA NASR runway alignments and the per end right traffic flags — pick a runway to see its pattern. Live wind picks the favored runway when KSDC reports it.

5,000 ftNMNxw 010°downwind 280°base 190°final 100°45° entry1028

RWY 10LEFT traffic

Heading
100° mag · 088° true
Dimensions
3,803 × 60 ft
TPA
1,400 ft MSL · 976 AGL · charted
Surface
Asphalt
Lights
2-light PAPI (left) (3°)
CTAF
122.8

Enter the left downwind (heading 280°) on the 45° at 1,400 ft MSL.

More details — RWY 10
Threshold elev
424 ft
Markings
nonprecision
Approach obstacle
Trees, 30 ft, 261 ft from threshold, 177 ft L of centerline — 2:1 slope to clear · penetrates the 20:1 visual approach surface
Threshold crossing height
40 ft
TDZ elevation
424 ft
End lights
REIL

Condition: Good. Edge lights: Med. Weight bearing: Single wheel 12k.

Pattern side: FAA NASR · TPA charted (NASR) · layout: FAA runway-end coordinates

Pattern direction by runway

RunwayPatternHeadingPattern altitude
10 Left traffic 100° mag 1,400 ft MSL · 976 AGL
28 Left traffic 280° mag 1,400 ft MSL · 976 AGL

Pattern altitude is published for KSDC in the FAA NASR data. Headings are the runway alignment; downwind is the reciprocal.

Flying the pattern at KSDC

Williamson Sodus Airport is non towered, so the pattern is self announced on CTAF 122.8. AC 90-66B asks for a report on entry and on each leg, and for the standard 45° entry to downwind at pattern altitude.

All ends are left traffic, which is the FAR 91.126 default — turns to the left unless the field charts otherwise. The full entry procedure is here →

Frequently asked

What is the traffic pattern altitude at KSDC?

The FAA publishes a traffic pattern altitude of 976 ft AGL for Williamson Sodus Airport, which is 1,400 ft MSL on the altimeter with the field at 424 ft.

Does KSDC have right traffic?

No. All 2 runway ends at Williamson Sodus Airport use standard left traffic, so no right pattern is charted here.

What frequency is the pattern on at KSDC?

Williamson Sodus Airport is non towered, so pattern position reports go on the CTAF, 122.8. AC 90-66B asks for self announcing on entry and on each leg.

More about KSDC

Pattern direction and alignment are drawn from the FAA NASR (28-day cycle); the diagram is generated, not an FAA chart. Pattern altitude is shown as published where NASR carries one, otherwise as the AC 90-66B 1,000 ft AGL convention. For planning and education only; always verify against the Chart Supplement.