Koch Airport

IS71 · Durand, IL · Print kneeboard

Elevation

800 ft MSL

Longest runway

2,450 ft 08/26

Runway

Nearby now

Loading…

Weather

METAR observed

Loading current weather…

TAF forecast

Loading forecast…

Sun & FAA night2026-08-04 · night begins 08:45 PM

Event	Local (CDT)	UTC
Morning civil twilight Loggable night ends	05:20 AM	10:20Z
Sunrise	05:52 AM	10:52Z
Sunset	08:13 PM	01:13Z
Evening civil twilight Loggable night begins	08:45 PM	01:45Z

Loggable night (§1.1)

08:45 PM → 05:20 AM

Night currency (§61.57)

09:13 PM → 04:52 AM

Plan a flight from IS71

Destination

TAS (kt)Burn (gph)Reserve (hr)Cruise (ft)Max alt (ft)Wind from (°)Wind (kt)

Winds aloft NOAA forecast · 3,000 to 53,000 ft

Loading winds aloft…

Advisories

NOTAMs

Loading NOTAMs…

Pilot reports

Loading PIREPs…

Airspace hazards

Checking advisories…

Runways

RWY 26LEFT traffic

Heading: 260° true
Dimensions: 2,450 × 70 ft
TPA: 1,800 ft MSL (≈1,000 AGL) · standard
Surface: TURF

Enter the left downwind (heading 080°) on the 45° at 1,800 ft MSL (≈1,000 AGL).

Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: schematic (headings + lengths)

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
08/26	2,450 ft

Prefer one flat page? Full runway details for IS71 → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the IS71 kneeboard →

Comms & NavAids

Nearby navigation aids

JVL 114.30

NavAid	Type	Freq · ch	Range	Radial / Dist magnetic
JVL · Janesville	VOR/DME	114.30 · 90X	Low	r212° / 7.3 NM

Charts & procedures

No published instrument procedures or Chart Supplement for IS71 — open it on the VFR sectional →

Airport info

Airport information

FAA LID: IS71
Coordinates: 42.4592, -89.1994
Elevation: 800 ft MSL

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

No published services or facility detail for IS71.

Nearby airports

Loading nearby conditions…

Also nearby: LL89 Blackhawk Farms Inc Airport (private) (4 NM) · LL80 Darrington Airport (private) (5 NM) · LL88 Harry D Fenton Airport (5 NM) · 3LL0 Miller Airport (private) (5 NM) · LL79 Severson Airport (private) (5 NM) · IS78 Early-Merkel Field (private) (6 NM)

About IS71

Koch Airport (IS71) is an airport in Durand, IL, at 800 ft MSL. It has 1 runway, the longest 2,450 ft. This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for IS71, refreshed from the Aviation Weather Center and FAA NASR.

What is the longest runway at IS71?

Koch Airport has 1 runway; the longest is 2,450 ft. See the Runways section for headings, surface, and lighting.

Where is IS71?

Koch Airport is in Durand, IL, at an elevation of 800 ft MSL. Coordinates: 42.4592, -89.1994.

Fly out of IS71 often?

Save IS71 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.

Get the appSoon

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 IS71 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.