Johnston Regional Airport traffic pattern

Pattern altitude at Johnston Regional Airport (JNX · KJNX) is 1,199 ft MSL · 1,035 AGL as published by the FAA, and every runway end is standard left traffic.

All of Johnston Regional 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 KJNX reports it.

RWY 21LEFT traffic

Heading: 212° mag · 203° true
Dimensions: 5,500 × 100 ft
TPA: 1,199 ft MSL · 1,035 AGL · charted
Surface: Asphalt
Lights: 4-light PAPI (left) (4°)
CTAF: 122.725

Enter the left downwind (heading 032°) on the 45° at 1,199 ft MSL.

More details — RWY 21

Threshold elev: 164 ft
Markings: nonprecision
Approach obstacle: Trees, 36 ft, 241 ft from threshold, 435 ft L of centerline — 1:1 slope to clear · penetrates the 20:1 visual approach surface
Threshold crossing height: 49 ft
TDZ elevation: 164 ft
End lights: REIL

Condition: Good. Edge lights: Med. Weight bearing: Single wheel 65k, Double wheel 65k.

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

Pattern direction by runway

Runway	Pattern	Heading	Pattern altitude
03	Left traffic	032° mag	1,199 ft MSL · 1,035 AGL
21	Left traffic	212° mag	1,199 ft MSL · 1,035 AGL

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

Flying the pattern at KJNX

Johnston Regional Airport is non towered, so the pattern is self announced on CTAF 122.725. 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 KJNX?

The FAA publishes a traffic pattern altitude of 1,035 ft AGL for Johnston Regional Airport, which is 1,199 ft MSL on the altimeter with the field at 164 ft.

Does KJNX have right traffic?

No. All 2 runway ends at Johnston Regional Airport use standard left traffic, so no right pattern is charted here.

What frequency is the pattern on at KJNX?

Johnston Regional Airport is non towered, so pattern position reports go on the CTAF, 122.725. AC 90-66B asks for self announcing on entry and on each leg.

More about KJNX

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.