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Bolingbrook's Clow International traffic pattern

Pattern altitude at Bolingbrook's Clow International (1C5) is 1,505 ft MSL · 830 AGL as published by the FAA, and every runway end is standard left traffic. · Open on the map

All of Bolingbrook's Clow 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 1C5 reports it.

5,000 ftNMNxw 092°downwind 002°base 272°final 182°45° entry1836

RWY 18LEFT traffic

Heading
182° mag · 178° true
Dimensions
3,360 × 75 ft
TPA
1,505 ft MSL · 830 AGL · charted
Surface
Asphalt
CTAF
122.9

Enter the left downwind (heading 002°) on the 45° at 1,505 ft MSL.

More details — RWY 18
Threshold elev
675 ft
Markings
nonprecision
Approach obstacle
Tree, 34 ft, 697 ft from threshold, 126 ft R of centerline — 14:1 slope to clear · penetrates the 20:1 visual approach surface
TDZ elevation
675 ft

Condition: Good. Edge lights: Med. Weight bearing: Single wheel 12.5k.

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

Pattern direction by runway

RunwayPatternHeadingPattern altitude
18 Left traffic 182° mag 1,505 ft MSL · 830 AGL
36 Left traffic 002° mag 1,505 ft MSL · 830 AGL

Pattern altitude is published for 1C5 in the FAA NASR data. Headings are the runway alignment; downwind is the reciprocal.

Flying the pattern at 1C5

Bolingbrook's Clow International 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 1C5?

The FAA publishes a traffic pattern altitude of 830 ft AGL for Bolingbrook's Clow International, which is 1,505 ft MSL on the altimeter with the field at 675 ft.

Does 1C5 have right traffic?

No. All 2 runway ends at Bolingbrook's Clow International use standard left traffic, so no right pattern is charted here.

What frequency is the pattern on at 1C5?

Bolingbrook's Clow International 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 1C5

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.