Knox County traffic pattern

Pattern altitude at Knox County (4I3) is 2,000 ft MSL · 808 AGL as published by the FAA, and every runway end is standard left traffic. · Open on the map

All of Knox County — 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 4I3 reports it.

RWY 10LEFT traffic

Heading: 104° mag · 098° true
Dimensions: 5,504 × 100 ft
TPA: 2,000 ft MSL · 808 AGL · charted
Surface: Asphalt
Lights: 4-light PAPI (left) (3°)
CTAF: 123.05

Enter the left downwind (heading 284°) on the 45° at 2,000 ft MSL.

More details — RWY 10

Threshold elev: 1,187 ft
Markings: nonprecision
Approach obstacle: Trees, 126 ft, 3,188 ft from threshold, 60 ft L of centerline — 23:1 slope to clear
Threshold crossing height: 40 ft
TDZ elevation: 1,192 ft
End lights: REIL

Condition: Good. Edge lights: Med. Surface: Grooved. Weight bearing: Single wheel 55k, Double wheel 100k.

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

Pattern direction by runway

Runway	Pattern	Heading	Pattern altitude
10	Left traffic	104° mag	2,000 ft MSL · 808 AGL
28	Left traffic	284° mag	2,000 ft MSL · 808 AGL

Pattern altitude is published for 4I3 in the FAA NASR data. Headings are the runway alignment; downwind is the reciprocal.

Flying the pattern at 4I3

Knox County is non towered, so the pattern is self announced on CTAF 123.05. 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 4I3?

The FAA publishes a traffic pattern altitude of 808 ft AGL for Knox County, which is 2,000 ft MSL on the altimeter with the field at 1,192 ft.

Does 4I3 have right traffic?

No. All 2 runway ends at Knox County use standard left traffic, so no right pattern is charted here.

What frequency is the pattern on at 4I3?

Knox County is non towered, so pattern position reports go on the CTAF, 123.05. AC 90-66B asks for self announcing on entry and on each leg.

More about 4I3

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.