FAA 7460-1 › Oklahoma ›
Building or using a crane near Prague Muni (O47)?
Prague Muni in Prague, Oklahoma 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 O47 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, 1,010 ft above sea level:
| Distance from nearest runway | Notice required above (height over 1,010 ft) | …which is this elevation (AMSL) |
|---|---|---|
| 250 ft | 2 ft | 1,013 ft |
| 500 ft | 5 ft | 1,015 ft |
| 1,000 ft | 10 ft | 1,020 ft |
| 2,000 ft | 20 ft | 1,030 ft |
| 3,000 ft | 30 ft | 1,040 ft |
| 5,000 ft | 50 ft | 1,060 ft |
| 7,500 ft | 75 ft | 1,085 ft |
| 10,000 ft | 100 ft | 1,110 ft |
| 15,000 ft | 150 ft | 1,160 ft |
| 20,000 ft | 200 ft | 1,210 ft |
| Beyond 20,000 ft | Only the 200-ft-above-ground rule applies (77.9(a)) | |
If your ground is lower than 1,010 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
Dashed line: the 20,000-ft area where the 100:1 notice slope applies; inner line: 5,000 ft.
| Runway | Length | End elevations (ft AMSL) |
|---|---|---|
| 17/35 | 3,600 ft | 1041 / 1010.1 |
Filing Form 7460-1 near O47
- File online through the FAA's OE/AAA system at least 45 days before construction or before applying for a building permit, whichever is first. Filing is free.
- You need NAD 83 coordinates, site ground elevation, structure height above ground and above sea level.
- Construction on airport property always needs notice, whatever the height.
More: Do I need to file Form 7460-1? · Cranes and Form 7460-1
Other public-use airports nearby
- SRE — Seminole Muni (13 nm)
- SNL — Shawnee Rgnl (13 nm)
- CQB — Chandler Rgnl (15 nm)
- 3OK — Biggs Airport (18 nm)
- SUD — Stroud Muni (19 nm)
- F81 — Okemah Muni (21 nm)
Source: FAA airport, runway and runway-end data (NASR cycle effective 2026/10/01). Screening only — the FAA issues determinations.