Anacortes Airport traffic pattern

Pattern altitude at Anacortes Airport (74S · OTS) is 1,200 ft MSL (≈1,000 AGL) by the standard convention — none is published for this field, and 18 is charted right traffic. · Open on the map

All of Anacortes 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 74S reports it.

RWY 18RIGHT trafficRP · charted

Heading: 179° mag · 200° true
Dimensions: 3,018 × 60 ft
TPA: 1,200 ft MSL (≈1,000 AGL) · standard
Surface: Asphalt
Lights: 4-light PAPI (right) (3°)
CTAF: 128.25

Enter the right downwind (heading 359°) on the 45° at 1,200 ft MSL (≈1,000 AGL).

More details — RWY 18

Threshold elev: 238 ft
Markings: basic
Approach obstacle: Tree, 22 ft, 767 ft from threshold, 0 ft B of centerline — 25:1 slope to clear
Threshold crossing height: 40 ft
TDZ elevation: 246 ft
End lights: REIL

Condition: Good. Edge lights: Med. Surface: Grooved. Weight bearing: Single wheel 12.5k.

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
18	Right traffic	179° mag	1,200 ft MSL (≈1,000 AGL)
36	Left traffic	359° mag	1,200 ft MSL (≈1,000 AGL)

No pattern altitude is published for 74S; 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 74S

Anacortes Airport is non towered, so the pattern is self announced on CTAF 128.25. 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: 18. 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 74S?

Anacortes 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 1,200 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 74S have right traffic?

Yes, on one runway end: 18. Every other end at Anacortes Airport is standard left traffic.

What frequency is the pattern on at 74S?

Anacortes Airport is non towered, so pattern position reports go on the CTAF, 128.25. AC 90-66B asks for self announcing on entry and on each leg.

More about 74S

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.