# Alan B. Janssen Airport (4LL9)

**Alan B. Janssen Airport** (FAA: 4LL9) is a small airport in Morrisonville, Illinois, United States. It has one runway, 1,980 ft (604 m) long, grass.

Web page: https://dromopedia.com/airports/4ll9

## At a glance

- FAA: 4LL9
- Type: Small airport
- Serves: Morrisonville, Illinois, United States
- Elevation: 642 ft / 196 m
- Coordinates: 39.3437, -89.4237
- Runways: 1
- Longest runway: 1,980 ft / 604 m
- Time zone: UTC-6/-5 · America/Chicago
- Wikidata: https://www.wikidata.org/wiki/Q34955108
- Weather station: KTAZ
- Ident: 4LL9

## Runways

| Ident | Length | Width | Surface | True headings | Lighted |
| --- | --- | --- | --- | --- | --- |
| E/W | 1,980 ft / 604 m | 75 ft / 23 m | Grass |  |  |

## Rankings

Ranked among 48,075 open airports; = marks a shared place.

| Measure | Value | World | Region | Country |
| --- | --- | --- | --- | --- |
| Longest runway | 1,980 ft / 604 m | =25,019 of 29,858 | =12,408 in North America | =10,942 in US |
| Elevation | 642 ft / 196 m | =24,574 of 43,403 | =11,790 in North America | =9,814 in US |
| Runways | 1 | =4,364 of 29,978 | =2,583 in North America | =2,326 in US |

## Nearby airports

- [1IL1](https://dromopedia.com/airports/1il1.md) Horsefeathers Ranch Airport · 7.1 mi / 11 km
- [6IL7](https://dromopedia.com/airports/us-0502.md) Kleinik RLA Airport · 9.3 mi / 15 km
- [1LL5](https://dromopedia.com/airports/1ll5.md) Justison Airport · 9.7 mi / 16 km
- [28IS](https://dromopedia.com/airports/28is.md) O K Flying Club Inc Airport · 12 mi / 19 km
- [KTAZ](https://dromopedia.com/airports/ktaz.md) Taylorville Municipal Airport · 14 mi / 23 km
- [3LF](https://dromopedia.com/airports/k3lf.md) Litchfield Municipal Airport · 18 mi / 30 km

## Sources

- [FAA NASR](https://www.faa.gov/air_traffic/flight_info/aeronav/aero_data/NASR_Subscription/): US airport data: FAA National Airspace System Resources (Public Domain (US Government))
- [NOAA Aviation Weather Center](https://aviationweather.gov/data/api/): Weather data: NOAA Aviation Weather Center (Public Domain (US Government))
- [OurAirports](https://ourairports.com/data/): Airport data from OurAirports (Public Domain)
- [Wikidata](https://www.wikidata.org): Structured data from Wikidata (CC0 1.0)
- [timezone-boundary-builder](https://github.com/evansiroky/timezone-boundary-builder): Time zone boundaries © OpenStreetMap contributors, timezone-boundary-builder (ODbL 1.0)
- Every figure with its source: https://dromopedia.com/airports/4ll9/data