Libby traffic pattern

Pattern altitude at Libby (S59) is 3,600 ft MSL (≈1,000 AGL) by the standard convention — none is published for this field, and every runway end is standard left traffic. · Open on the map

All of Libby — 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 S59 reports it.

RWY 15LEFT traffic

Heading: 148° mag · 165° true
Dimensions: 5,003 × 75 ft
TPA: 3,600 ft MSL (≈1,000 AGL) · standard
Surface: Asphalt
Lights: 2-light PAPI (left) (3°)
CTAF: 122.8

Enter the left downwind (heading 328°) on the 45° at 3,600 ft MSL (≈1,000 AGL).

More details — RWY 15

Threshold elev: 2,585 ft
Markings: nonprecision
Approach obstacle: Trees, 38 ft, 215 ft from threshold, 170 ft L of centerline
Threshold crossing height: 28 ft
TDZ elevation: 2,601 ft
End lights: REIL

Condition: Good. Edge lights: Med. Surface: Porous friction course. Weight bearing: Single wheel 24k.

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

Pattern direction by runway

Runway	Pattern	Heading	Pattern altitude
15	Left traffic	148° mag	3,600 ft MSL (≈1,000 AGL)
33	Left traffic	328° mag	3,600 ft MSL (≈1,000 AGL)

No pattern altitude is published for S59; 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 S59

Libby 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 S59?

Libby 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 3,600 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 S59 have right traffic?

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

What frequency is the pattern on at S59?

Libby 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 S59

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.