Ennis Big Sky Airport traffic pattern

Pattern altitude at Ennis Big Sky Airport (EKS · KEKS) is 6,400 ft MSL (≈1,000 AGL) by the standard convention — none is published for this field, and 16 is charted right traffic.

All of Ennis Big Sky 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 KEKS reports it.

RWY 16RIGHT trafficRP · charted

Heading: 165° mag · 177° true
Dimensions: 7,600 × 100 ft
TPA: 6,400 ft MSL (≈1,000 AGL) · standard
Surface: Asphalt
Lights: 4-light PAPI (left) (3°)
CTAF: 122.8

Enter the right downwind (heading 345°) on the 45° at 6,400 ft MSL (≈1,000 AGL).

More details — RWY 16

Threshold elev: 5,433 ft
Markings: nonprecision
Approach obstacle: Fence, 56 ft, 1,765 ft from threshold, 350 ft L of centerline — 27:1 slope to clear
Threshold crossing height: 38 ft
TDZ elevation: 5,433 ft

Condition: Excellent. Edge lights: Med. Surface: Grooved. Weight bearing: Single wheel 87k, Double wheel 138k, Dual tandem 236k. PCN 34.

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
16	Right traffic	165° mag	6,400 ft MSL (≈1,000 AGL)
34	Left traffic	345° mag	6,400 ft MSL (≈1,000 AGL)

No pattern altitude is published for KEKS; 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 KEKS

Ennis Big Sky 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.

Watch the right traffic ends here: 16. 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 KEKS?

Ennis Big Sky Airport 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 6,400 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 KEKS have right traffic?

Yes, on one runway end: 16. Every other end at Ennis Big Sky Airport is standard left traffic.

What frequency is the pattern on at KEKS?

Ennis Big Sky 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 KEKS

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.