St Johns Industrial Air Park traffic pattern

Pattern altitude at St Johns Industrial Air Park (SJN · KSJN) is 6,700 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 St Johns Industrial Air Park — 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 KSJN reports it.

RWY 14LEFT traffic

Heading: 136° mag · 148° true
Dimensions: 5,322 × 75 ft
TPA: 6,700 ft MSL (≈1,000 AGL) · standard
Surface: Asphalt
Lights: 2-light PAPI (left) (3°)
CTAF: 122.8

Enter the left downwind (heading 316°) on the 45° at 6,700 ft MSL (≈1,000 AGL).

More details — RWY 14

Threshold elev: 5,734 ft
Markings: nonprecision
Threshold crossing height: 40 ft
TDZ elevation: 5,736 ft
End lights: REIL

Condition: Good. Edge lights: Med. Weight bearing: Single wheel 90k.

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	025° mag	6,700 ft MSL (≈1,000 AGL)
21	Left traffic	205° mag	6,700 ft MSL (≈1,000 AGL)
14	Left traffic	136° mag	6,700 ft MSL (≈1,000 AGL)
32	Left traffic	316° mag	6,700 ft MSL (≈1,000 AGL)

No pattern altitude is published for KSJN; 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 KSJN

St Johns Industrial Air Park 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.

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 KSJN?

St Johns Industrial Air Park 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 6,700 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 KSJN have right traffic?

No. All 4 runway ends at St Johns Industrial Air Park use standard left traffic, so no right pattern is charted here.

What frequency is the pattern on at KSJN?

St Johns Industrial Air Park 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 KSJN

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.