MapClerk

FAA 7460-1 › Minnesota ›

Building or using a crane near Austin Muni (AUM)?

Austin Muni in Austin, Minnesota 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.

No address handy? Try 16700 Saticoy St, Van Nuys, CA 91406

How tall can you build near AUM 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, 1,231 ft above sea level:

Distance from nearest runwayNotice required above (height over 1,231 ft)…which is this elevation (AMSL)
250 ft2 ft1,233 ft
500 ft5 ft1,236 ft
1,000 ft10 ft1,241 ft
2,000 ft20 ft1,251 ft
3,000 ft30 ft1,261 ft
5,000 ft50 ft1,281 ft
7,500 ft75 ft1,306 ft
10,000 ft100 ft1,331 ft
15,000 ft150 ft1,381 ft
20,000 ft200 ft1,431 ft
Beyond 20,000 ftOnly the 200-ft-above-ground rule applies (77.9(a))

If your ground is lower than 1,231 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)
17/355,800 ft1231 / 1230.8

Filing Form 7460-1 near AUM

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.