Lynden Municipal/Jansen Field traffic pattern

Pattern altitude at Lynden Municipal/Jansen Field (38W) is 1,100 ft MSL (≈1,000 AGL) by the standard convention — none is published for this field, and every runway end is standard left traffic. · Open on the map

All of Lynden Municipal/Jansen 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 38W reports it.

RWY 26LEFT traffic

Heading: 256° mag · 272° true
Dimensions: 2,425 × 40 ft
TPA: 1,100 ft MSL (≈1,000 AGL) · standard
Surface: Asphalt
Lights: 2-light PAPI (right) (6°)
Displaced thr: 422 ft
CTAF: 122.9

Enter the left downwind (heading 076°) on the 45° at 1,100 ft MSL (≈1,000 AGL).

More details — RWY 26

Markings: basic
Approach obstacle: Trees, 36 ft, 230 ft from threshold, 0 ft B of centerline — 1:1 slope to clear · penetrates the 20:1 visual approach surface
Threshold crossing height: 15 ft
Declared TORA/TODA/ASDA/LDA: 2,425 / — / — / 2,003 ft

Condition: Good. Edge lights: Nstd. Weight bearing: Single wheel 12k.

Pattern side + displaced threshold: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: FAA runway-end coordinates

Pattern direction by runway

Runway	Pattern	Heading	Pattern altitude
08	Left traffic	076° mag	1,100 ft MSL (≈1,000 AGL)
26	Left traffic	256° mag	1,100 ft MSL (≈1,000 AGL)

No pattern altitude is published for 38W; 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 38W

Lynden Municipal/Jansen Field is non towered, so the pattern is self announced on CTAF 122.9. 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 38W?

Lynden Municipal/Jansen 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 1,100 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 38W have right traffic?

No. All 2 runway ends at Lynden Municipal/Jansen Field use standard left traffic, so no right pattern is charted here.

What frequency is the pattern on at 38W?

Lynden Municipal/Jansen Field is non towered, so pattern position reports go on the CTAF, 122.9. AC 90-66B asks for self announcing on entry and on each leg.

More about 38W

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.

Something here wrong or out of date? Report a data problem.