The University Of Chicago Medicine HeliportPrivate
4IS3 · Chicago, IL · Non-towered · Open on the map
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Weather
METAR observed
TAF forecast
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Sun & FAA night2026-09-21 · night begins 07:18 PM
| Event | Local (CDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 06:09 AM | 11:09Z |
| Sunrise | 06:37 AM | 11:37Z |
| Sunset | 06:50 PM | 23:50Z |
| Evening civil twilight Loggable night begins | 07:18 PM | 00:18Z |
Plan a flight from 4IS3
Winds aloft NOAA forecast · 3,000 to 53,000 ft
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Full reports: nearest reporting station
Advisories
NOTAMs · Loading NOTAMs…
Pilot reports · Loading PIREPs…
Airspace hazards · Checking SIGMETs and G-AIRMETs…
Temporary flight restrictions · Checking for TFRs…
Runways
| Runway | Length | Your margin |
|---|---|---|
| H1/ | 50 ft | |
| H2/ | 50 ft |
Prefer one flat page? Full runway details for 4IS3 → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the 4IS3 kneeboard →
Comms & NavAids
Nearby navigation aids
CGT 114.20 · OBK 113.00 · EON 113.20 · +2
| NavAid | Type | Freq · ch | Range | Radial / Dist magnetic |
|---|---|---|---|---|
| CGT · Chicago Heights | VORTAC | 114.20 · 89X | Low | r353° / 16.9 NM |
| OBK · Northbrook | VOR/DME | 113.00 · 77X | High | r151° / 30.1 NM |
| EON · Peotone | VORTAC | 113.20 · 79X | Low | r013° / 32.4 NM |
| DPA · Dupage | VOR/DME | 114.55 · 92Y | Low | r098° / 33.8 NM |
| JOT · Joliet | VOR/DME | 112.30 · 70X | High | r063° / 35.2 NM |
Charts & procedures
No published instrument procedures or Chart Supplement for 4IS3 — open it on the VFR sectional →
Airport info
Airport information
- FAA LID
- 4IS3
- Coordinates
- 41.7910, -87.6057
- Elevation
- 830 ft MSL
- Magnetic variation
- 4W
- Sectional chart
- CHICAGO
- Airport use
- Private
- Control tower
- No
- ARTCC
- CHICAGO (ZAU)
- Flight service (FSS)
- KANKAKEE · 1-800-WX-BRIEF
- Attendance
- ALL ALL
- Beacon
- white-green-yellow (SEE RMK)
- Segmented circle
- No
- Wind indicator
- yes
- Activated
- 1984/02
- Distance from city
- 0 NW
Night operations
- Airport lighting
- SEE RMK
- Rotating beacon
- white-green-yellow · SEE RMK
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are under Sun & FAA night in the Weather section.
Ownership & management 2 contacts
Remarks FAA · 5 notes
General
- FOR CD CTC CHICAGO APCH AT 847-289-0926.
Runways
- ROOFTOP.
Lighting
- 24 HRS
- PERIMETER LGTS OPR 24 HRS.
Contact
- EMAIL ADDRESS: IRA.BLUMEN@UCHOSPITALS.EDU (ALL LOWER CASE)
Nearby airports
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Also nearby: IL69 First Area Police Hdqtrs (private) (1 NM) · 43IL Vertiport Chicago (private) (5 NM) · LL35 Chicago Fire Dept Air Sea Rescue (private) (5 NM) · 10LL Chicago Police Marine (private) (6 NM) · 75IS Lurie Childrens Hospital (private) (6 NM)
About 4IS3
The University Of Chicago Medicine (4IS3) is a heliport in Chicago, IL, at 830 ft MSL. It has 2 runways, the longest 50 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 4IS3, refreshed from the Aviation Weather Center and FAA NASR.
Does 4IS3 have a control tower?
No. The University Of Chicago Medicine is a non-towered (pilot-controlled) heliport; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at 4IS3?
The University Of Chicago Medicine has 2 runways; the longest is 50 ft. See the Runways section for headings, surface, and lighting.
Where is 4IS3?
The University Of Chicago Medicine is in Chicago, IL, at an elevation of 830 ft MSL. Coordinates: 41.7910, -87.6057.
More about 4IS3
Weather is live from the Aviation Weather Center; airport facility data is from the FAA NASR (28-day cycle). For planning and education only; always verify against official sources. Open 4IS3 in a full tool: METAR/TAF decoder, crosswind calculator, sun & night times, or the density altitude calculator. Planning from here? Find the nearest airport with fuel or an approach, or check whether an IFR alternate is required.
Something here wrong or out of date? Report a data problem.