Foothills Regional Airport traffic pattern

Pattern altitude at Foothills Regional Airport (MRN · KMRN) is 2,300 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 Foothills Regional 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 KMRN reports it.

RWY 21LEFT traffic

Heading: 211° mag · 204° true
Dimensions: 5,500 × 75 ft
TPA: 2,300 ft MSL (≈1,000 AGL) · standard
Surface: Asphalt
Lights: 4-light PAPI (right) (3.5°)
CTAF: 122.7

Enter the left downwind (heading 031°) on the 45° at 2,300 ft MSL (≈1,000 AGL).

More details — RWY 21

Threshold elev: 1,270 ft
Markings: nonprecision
Approach obstacle: Trees, 26 ft, 458 ft from threshold, 243 ft R of centerline — 9:1 slope to clear · penetrates the 20:1 visual approach surface
Threshold crossing height: 48 ft
TDZ elevation: 1,270 ft
End lights: REIL

Condition: Good. Edge lights: Med. Weight bearing: Double wheel 60k.

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
03	Left traffic	031° mag	2,300 ft MSL (≈1,000 AGL)
21	Left traffic	211° mag	2,300 ft MSL (≈1,000 AGL)

No pattern altitude is published for KMRN; 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 KMRN

Foothills Regional Airport is non towered, so the pattern is self announced on CTAF 122.7. 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 KMRN?

Foothills Regional 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 2,300 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 KMRN have right traffic?

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

What frequency is the pattern on at KMRN?

Foothills Regional Airport is non towered, so pattern position reports go on the CTAF, 122.7. AC 90-66B asks for self announcing on entry and on each leg.

More about KMRN

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.