Janssen Airport

1LL6 · Shannon, IL · 877 ft elevation

Overview Weather Runways Comms & NavAids Charts Services & info

Airport information

FAA LID: 1LL6
Coordinates: 42.2281, -89.7382
Elevation: 877 ft MSL

Detailed FAA facility data isn't available for this airport.

Weather

METAR observed

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TAF forecast

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Sun & FAA night 2026-06-21

Event	Local (CDT)	UTC
Morning civil twilight Loggable night ends	04:48 AM	09:48Z
Sunrise	05:23 AM	10:23Z
Sunset	08:39 PM	01:39Z
Evening civil twilight Loggable night begins	09:13 PM	02:13Z

Loggable night (§1.1)

09:13 PM → 04:48 AM

Night currency (§61.57)

09:39 PM → 04:23 AM

Plan a flight from 1LL6

Destination (ICAO)

TAS (kt)Burn (gph)Reserve (hr)Wind from (°)Wind (kt)

Traffic pattern

Landing runway

LEFT traffic

Landing: Rwy 18
Pattern: left (turns left)
TPA: 1,900 ft MSL (≈1,000 AGL)

Enter the left downwind for Rwy 18 at 1,900 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).

Runway 18/36

1,650 ft × 100 ft · TURF

Heading: n/a

Heading: n/a

Headings shown are true (magnetic variation unavailable).

Will it fit? Your aircraft's required runway length (from the POH) — checked against every runway here

ft · ≥1.5× comfortable, under 1.25× tight · saved across airports

Runway	Length	Your margin
18/36	1,650 ft

Nearby navigation aids

NavAid	Type	Freq	Radial / Dist magnetic
PLL · Polo	VOR-DME	111.20	r326° / 18.4 NM
RFD · Rockford	VOR-DME	110.80	r270° / 24 NM
JVL · Janesville	VOR-DME	114.30	r232° / 34.3 NM

VFR sectional

Open 1LL6 on the VFR sectional (SkyVector) ↗

No published instrument procedures or Chart Supplement for 1LL6. VFR sectional link above.

No published services or facility detail for 1LL6.

Nearby airports

2IL0 · Sneek AirportPrivate (4 NM)88LL · Block AirportPrivate (5 NM)1IS4 · Swan Valley Farm Airport (7 NM)KFEP · Albertus Airport (7 NM)6IL4 · Foxfield AerodromePrivate (8 NM)96IL · Gerbick AirportPrivate (10 NM)

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 1LL6 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 1LL6

Janssen Airport (1LL6) is an airport in Shannon, IL, at 877 ft MSL. It has 1 runway, the longest 1,650 ft. This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 1LL6, refreshed from the Aviation Weather Center and FAA NASR.

What is the longest runway at 1LL6?

Janssen Airport has 1 runway; the longest is 1,650 ft. See the Runways tab for headings, surface, and lighting.

Where is 1LL6?

Janssen Airport is in Shannon, IL, at an elevation of 877 ft MSL. Coordinates: 42.2281, -89.7382.

Fly out of 1LL6 often?

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