1LL6
Janssen Airport
Janssen Airport (1LL6) is a general-aviation airfield serving Shannon, Illinois. The field lies at 877 ft (267 m) above sea level and has a single runway of 1,650 ft (503 m), grass. Its nearest neighbour is Sneek Airport (2IL0), 4 nm SE.
Janssen Airport is a smaller field, so Alārium does not attribute movements to it directly — but aircraft flying near it appear on the live map like any other, at their real altitude and on their real track.
Location
- Elevation
- 877 ft (267 m)
- Coordinates
- 42.2281, -89.7382
- Serving
- Shannon
- Region
- Illinois
- Time zone
- America/Chicago
Runways1 · longest 1,650 ft
The diagram shows each runway’s orientation and relative length, read from its designator — runway 18 points 180° magnetic. Threshold coordinates are not published for this field, so strips are drawn about its centre rather than where they sit on the ground. It is a diagram, not a chart to navigate by.
| Runway | Length | Width | Surface | Lighting |
|---|---|---|---|---|
| 18/36 | 1,650 ft503 m | 100 ft | Grass | — |
Nearby airfields
Runway and field data from the OurAirports public-domain dataset. Positions are ADS-B, which covers most but not all aircraft.