Chetek Municipal/Southworth traffic pattern

Pattern altitude at Chetek Municipal/Southworth (Y23) is 2,100 ft MSL (≈1,000 AGL) by the standard convention — none is published for this field, and 35, 07 are charted right traffic. · Open on the map

All of Chetek Municipal/Southworth — 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 Y23 reports it.

RWY 17LEFT traffic

Heading: 175° mag · 175° true
Dimensions: 3,401 × 60 ft
TPA: 2,100 ft MSL (≈1,000 AGL) · standard
Surface: Asphalt
Lights: 2-light PAPI (left) (4°)
Displaced thr: 600 ft
CTAF: 122.9

Enter the left downwind (heading 355°) on the 45° at 2,100 ft MSL (≈1,000 AGL).

More details — RWY 17

Threshold elev: 1,055 ft
Markings: nonprecision
Approach obstacle: Tree, 38 ft, 540 ft from threshold, 165 ft L of centerline — 8:1 slope to clear · penetrates the 20:1 visual approach surface
Threshold crossing height: 22 ft
TDZ elevation: 1,056 ft
End lights: REIL

Condition: Fair. Edge lights: Med.

Pattern side + displaced threshold: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: FAA runway-end coordinates

Pattern direction by runway

Runway	Pattern	Heading	Pattern altitude
17	Left traffic	175° mag	2,100 ft MSL (≈1,000 AGL)
35	Right traffic	355° mag	2,100 ft MSL (≈1,000 AGL)
07	Right traffic	075° mag	2,100 ft MSL (≈1,000 AGL)
25	Left traffic	255° mag	2,100 ft MSL (≈1,000 AGL)

No pattern altitude is published for Y23; the figure above is the AC 90-66B 1,000 ft AGL convention for propeller aircraft, rounded to the field. Turbine aircraft normally fly 1,500 ft AGL. Headings are the runway alignment; downwind is the reciprocal.

Flying the pattern at Y23

Chetek Municipal/Southworth is non towered, so the pattern is self announced on CTAF 122.9. 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: 35, 07. 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 Y23?

Chetek Municipal/Southworth has no traffic pattern altitude published in the FAA NASR data. The AC 90-66B convention for propeller aircraft is 1,000 ft AGL, which works out to roughly 2,100 ft MSL (≈1,000 AGL) here — but confirm it against the Chart Supplement before you fly, since a field can have a non standard pattern altitude that NASR does not carry.

Does Y23 have right traffic?

Yes, on 2 runway ends: 35, 07. Every other end at Chetek Municipal/Southworth is standard left traffic.

What frequency is the pattern on at Y23?

Chetek Municipal/Southworth is non towered, so pattern position reports go on the CTAF, 122.9. AC 90-66B asks for self announcing on entry and on each leg.

More about Y23

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.