San Luis Valley Regional Airport/Bergman Field traffic pattern

Pattern altitude at San Luis Valley Regional Airport/Bergman Field (ALS · KALS) is 8,500 ft MSL (≈1,000 AGL) by the standard convention — none is published for this field, and every runway end is standard left traffic.

All of San Luis Valley Regional Airport/Bergman Field — 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 KALS reports it.

RWY 20LEFT traffic

Heading: 203° mag · 212° true
Dimensions: 8,521 × 100 ft
TPA: 8,500 ft MSL (≈1,000 AGL) · standard
Surface: Asphalt
Lights: VASI (3°)
CTAF: 122.8

Enter the left downwind (heading 023°) on the 45° at 8,500 ft MSL (≈1,000 AGL).

More details — RWY 20

Threshold elev: 7,539 ft
Markings: precision
Approach obstacle: Tree, 40 ft, 1,310 ft from threshold, 15 ft R of centerline — 27:1 slope to clear
Threshold crossing height: 41 ft
TDZ elevation: 7,540 ft
Declared TORA/TODA/ASDA/LDA: 8,519 / 8,519 / 8,519 / 8,519 ft
End lights: REIL

Condition: Good. Edge lights: High. Surface: Grooved.

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
02	Left traffic	023° mag	8,500 ft MSL (≈1,000 AGL)
20	Left traffic	203° mag	8,500 ft MSL (≈1,000 AGL)

No pattern altitude is published for KALS; 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 KALS

San Luis Valley Regional Airport/Bergman Field 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 KALS?

San Luis Valley Regional Airport/Bergman Field 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 8,500 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 KALS have right traffic?

No. All 2 runway ends at San Luis Valley Regional Airport/Bergman Field use standard left traffic, so no right pattern is charted here.

What frequency is the pattern on at KALS?

San Luis Valley Regional Airport/Bergman Field 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 KALS

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.