Mammoth Yosemite Airport traffic pattern

Pattern altitude at Mammoth Yosemite Airport (MMH · KMMH) is 8,007 ft MSL · 872 AGL as published by the FAA, and 27 is charted right traffic.

All of Mammoth Yosemite 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 KMMH reports it.

RWY 27RIGHT trafficRP · charted

Heading: 274° mag · 289° true
Dimensions: 7,000 × 100 ft
TPA: 8,007 ft MSL · 872 AGL · charted
Surface: Asphalt
Lights: 4-light PAPI (left) (3°)
CTAF: 122.8

Enter the right downwind (heading 094°) on the 45° at 8,007 ft MSL.

More details — RWY 27

Threshold elev: 7,061 ft
Markings: nonprecision
Threshold crossing height: 45 ft
TDZ elevation: 7,097 ft
Declared TORA/TODA/ASDA/LDA: 7,000 / 7,000 / 7,000 / 7,000 ft
End lights: REIL

Condition: Excellent. Edge lights: Med. Surface: Grooved. Weight bearing: Single wheel 85k, Double wheel 150k.

Pattern side: FAA NASR · TPA charted (NASR) · layout: FAA runway-end coordinates

Pattern direction by runway

Runway	Pattern	Heading	Pattern altitude
09	Left traffic	094° mag	8,007 ft MSL · 872 AGL
27	Right traffic	274° mag	8,007 ft MSL · 872 AGL

Pattern altitude is published for KMMH in the FAA NASR data. Headings are the runway alignment; downwind is the reciprocal.

Flying the pattern at KMMH

Mammoth Yosemite 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: 27. 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 KMMH?

The FAA publishes a traffic pattern altitude of 872 ft AGL for Mammoth Yosemite Airport, which is 8,007 ft MSL on the altimeter with the field at 7,135 ft.

Does KMMH have right traffic?

Yes, on one runway end: 27. Every other end at Mammoth Yosemite Airport is standard left traffic.

What frequency is the pattern on at KMMH?

Mammoth Yosemite 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 KMMH

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.