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Boeing Field/King County International traffic pattern

Pattern altitude at Boeing Field/King County International (BFI · KBFI) is 1,000 ft MSL (≈1,000 AGL) by the standard convention — none is published for this field, and 14R, 32R are charted right traffic. · Open on the map

All of Boeing Field/King County International — 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 KBFI reports it.

5,000 ftNMNxw 225°downwind 315°base 045°final 135°45° entry14R32L14L32R

RWY 14RRIGHT trafficRP · charted

Heading
135° mag · 150° true
Dimensions
10,007 × 200 ft
TPA
1,000 ft MSL (≈1,000 AGL) · standard
Surface
Asphalt
Lights
4-light PAPI (left) (3°) + MALSF
ILS
ILS/DME · CAT I · LOC 110.9 (BFI) · GS 3.00°
CTAF
122.95
More details — RWY 14R
Threshold elev
18 ft
Markings
precision
Approach obstacle
Fence, 12 ft, 240 ft from threshold, 425 ft R of centerline — 3:1 slope to clear · penetrates the 20:1 visual approach surface
Threshold crossing height
55 ft
TDZ elevation
18 ft
Declared TORA/TODA/ASDA/LDA
10,000 / 10,000 / 9,120 / 9,120 ft

Condition: Good. Edge lights: High. Surface: Grooved. Weight bearing: Single wheel 100k, Double wheel 200k, Dual tandem 500k, Double dual tandem 800k.

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

Pattern direction by runway

RunwayPatternHeadingPattern altitude
14R Right traffic 135° mag 1,000 ft MSL (≈1,000 AGL)
32L Left traffic 315° mag 1,000 ft MSL (≈1,000 AGL)
14L Left traffic 135° mag 1,000 ft MSL (≈1,000 AGL)
32R Right traffic 315° mag 1,000 ft MSL (≈1,000 AGL)

No pattern altitude is published for KBFI; 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 KBFI

Boeing Field/King County International is towered, working 118.3. Contact the tower before entering the surface area and fly the pattern you are assigned — the directions below are the charted default when no instruction is given.

Watch the right traffic ends here: 14R, 32R. 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 KBFI?

Boeing Field/King County International 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 1,000 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 KBFI have right traffic?

Yes, on 2 runway ends: 14R, 32R. Every other end at Boeing Field/King County International is standard left traffic.

Do I fly a standard pattern at KBFI?

Boeing Field/King County International is towered (118.3), so the pattern shown here is the charted default — but the controller's instruction overrides it. Expect straight in approaches, base entries and midfield crossings as traffic dictates.

More about KBFI

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.