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FAA 7460-1 › Iowa ›

Building or using a crane near Sioux Gateway/brig General Bud Day Fld (SUX)?

Sioux Gateway/brig General Bud Day Fld in Sioux City, Iowa is a public-use airport. Under 14 CFR 77.9, anything within 20,000 feet of its runways that rises above a 100:1 slope needs FAA Form 7460-1 at least 45 days before construction. Check your exact site free.

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How tall can you build near SUX without filing?

The notice surface rises 1 foot for every 100 feet of horizontal distance from the nearest point of the nearest runway, starting at the runway's elevation. Using the lowest runway-end elevation, 1,093 ft above sea level:

Distance from nearest runwayNotice required above (height over 1,093 ft)…which is this elevation (AMSL)
250 ft2 ft1,096 ft
500 ft5 ft1,098 ft
1,000 ft10 ft1,103 ft
2,000 ft20 ft1,113 ft
3,000 ft30 ft1,123 ft
5,000 ft50 ft1,143 ft
7,500 ft75 ft1,168 ft
10,000 ft100 ft1,193 ft
15,000 ft150 ft1,243 ft
20,000 ft200 ft1,293 ft
Beyond 20,000 ftOnly the 200-ft-above-ground rule applies (77.9(a))

If your ground is lower than 1,093 ft you can build taller by the difference; if it's higher, less. Cranes count at their maximum height. The free check above uses USGS ground elevation for your exact spot.

Runways and notice boundary

5,000 ftN

Dashed line: the 20,000-ft area where the 100:1 notice slope applies; inner line: 5,000 ft.

RunwayLengthEnd elevations (ft AMSL)
13/319,002 ft1093.1 / 1093.4
18/366,401 ft1097.6 / 1095.3

Filing Form 7460-1 near SUX

More: Do I need to file Form 7460-1? · Cranes and Form 7460-1

Other public-use airports nearby

Source: FAA airport, runway and runway-end data (NASR cycle effective 2026/10/01). Screening only — the FAA issues determinations.