Airport information
- FAA LID
- 6Y4
- Coordinates
- 46.0522, -87.2582
- Elevation
- 970 ft MSL
- Sectional chart
- GREEN BAY
- Airport use
- Public
- Control tower
- No
- ARTCC
- MINNEAPOLIS (ZMP)
- Flight service (FSS)
- GREEN BAY · 1-800-WX-BRIEF
- NOTAM facility
- GRB
- Attendance
- UNATNDD
- Segmented circle
- No
- Wind indicator
- yes
- Activated
- 2016/08
- Distance from city
- 4 SW
Weather
METAR observed
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TAF forecast
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Sun & FAA night 2026-06-22
| Event | Local (EDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 05:19 AM | 09:19Z |
| Sunrise | 05:58 AM | 09:58Z |
| Sunset | 09:44 PM | 01:44Z |
| Evening civil twilight Loggable night begins | 10:23 PM | 02:23Z |
Plan a flight from 6Y4
Night operations
- Pilot-controlled lighting
- Usually keyed on CTAF 122.9 — confirm the click sequence in the Chart Supplement ↗
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are in the live weather panel above.
Traffic pattern
- Landing
- Rwy 12
- Pattern
- left (turns left)
- TPA
- 2,000 ft MSL (≈1,000 AGL)
- CTAF
- 122.9
Enter the left downwind for Rwy 12 at 2,000 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).
Runway 12/30
2,725 ft · Turf (Fair)- Heading
- 116° true
- Threshold elev
- 969 ft
- Traffic pattern
- Left
- Approach obstacle
- Road, 15 ft, 50 ft from threshold, 125 ft R of centerline — 3:1 slope to clear · penetrates the 20:1 visual approach surface
- Heading
- 296° true
- Threshold elev
- 957 ft
- Traffic pattern
- Left
- Approach obstacle
- Trees, 73 ft, 220 ft from threshold — 3:1 slope to clear · penetrates the 20:1 visual approach surface
Headings shown are true (magnetic variation unavailable).
| Runway | Length | Your margin |
|---|---|---|
| 12/30 | 2,725 ft |
Communication frequencies
Tower & ground
| CTAF | 122.9 |
Source: FAA NASR (current 28-day cycle).
Nearby navigation aids
| NavAid | Type | Freq | Radial / Dist magnetic |
|---|---|---|---|
| SAW · Sawyer | VOR-DME | 117.10 | r167° / 19.3 NM |
| ESC · Escanaba | VOR-DME | 110.80 | r340° / 21 NM |
| IMT · Iron Mountain | VOR-DME | 111.20 | r070° / 38.4 NM |
Chart Supplement FAA A/FD
Open PDF ↗Preview Chart Supplement
VFR sectional
Ownership & management
Remarks FAA
- NO SNOW REMOVAL.
- FOR CD CTC MINNEAPOLIS ARTCC AT 651-463-5588.
- DEER, BIRDS & WILDLIFE ON INVOF RWY.
- CELL.
- RWY 12 DTHR MKD WITH YELLOW CONES.
- RWY 30 DTHR MKD WITH YELLOW CONES.
- RWY 12 APCH RATIO 20:1 TO DTHR.
- RWY 30 APCH RATIO 20:1 TO DTHR.
Nearby airports
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 6Y4 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.
About 6Y4
Van Effen Field (6Y4) is an airport in Rock, MI, at 970 ft MSL. It has 1 runway, the longest 2,725 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 6Y4, refreshed from the Aviation Weather Center and FAA NASR.
Does 6Y4 have a control tower?
No. Van Effen Field is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM on the Comms & NavAids tab.
What is the longest runway at 6Y4?
Van Effen Field has 1 runway; the longest is 2,725 ft. See the Runways tab for headings, surface, and lighting.
Where is 6Y4?
Van Effen Field is in Rock, MI, at an elevation of 970 ft MSL. Coordinates: 46.0522, -87.2582.
Fly out of 6Y4 often?
Save 6Y4 as your home base in the SkyReady app for a one-tap Go/No-Go readiness brief, weather alerts, and automatic FAA currency — free to log.