Jefferson County International traffic pattern

Pattern altitude at Jefferson County International (0S9) is 1,000 ft MSL · 890 AGL as published by the FAA, and 09 is charted right traffic. · Open on the map

All of Jefferson County International — 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 0S9 reports it.

RWY 27LEFT traffic

Heading: 268° mag · 284° true
Dimensions: 3,000 × 75 ft
TPA: 1,000 ft MSL · 890 AGL · charted
Surface: Asphalt
Lights: 2-light PAPI (right) (4.25°)
CTAF: 123.0

Enter the left downwind (heading 088°) on the 45° at 1,000 ft MSL.

More details — RWY 27

Threshold elev: 106 ft
Markings: basic
Approach obstacle: Tree, 76 ft, 1,939 ft from threshold, 91 ft L of centerline — 22:1 slope to clear
Threshold crossing height: 42 ft
TDZ elevation: 110 ft
End lights: REIL

Condition: Excellent. Edge lights: Med. Weight bearing: Single wheel 12.5k.

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

Pattern direction by runway

Runway	Pattern	Heading	Pattern altitude
09	Right traffic	088° mag	1,000 ft MSL · 890 AGL
27	Left traffic	268° mag	1,000 ft MSL · 890 AGL

Pattern altitude is published for 0S9 in the FAA NASR data. Headings are the runway alignment; downwind is the reciprocal.

Flying the pattern at 0S9

Jefferson County International is non towered, so the pattern is self announced on CTAF 123.0. AC 90-66B asks for a report on entry and on each leg, and for the standard 45° entry to downwind at pattern altitude.

Watch the right traffic ends here: 09. A right pattern at a field where the other end is left is the single most common place to end up pointing at opposing traffic. The full entry procedure is here →

Frequently asked

What is the traffic pattern altitude at 0S9?

The FAA publishes a traffic pattern altitude of 890 ft AGL for Jefferson County International, which is 1,000 ft MSL on the altimeter with the field at 110 ft.

Does 0S9 have right traffic?

Yes, on one runway end: 09. Every other end at Jefferson County International is standard left traffic.

What frequency is the pattern on at 0S9?

Jefferson County International is non towered, so pattern position reports go on the CTAF, 123.0. AC 90-66B asks for self announcing on entry and on each leg.

More about 0S9

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.

Something here wrong or out of date? Report a data problem.