Gregory, South Dakota
9D1 Gregory Muni/Flynn Fld
Gregory Muni/Flynn Fld (9D1) is a non-towered, public-use airport in Gregory, South Dakota, at 2,174.5 ft MSL. Its runway is 13/31 (3,799 by 60 ft, asphalt). CTAF 122.8.
FAA NASR data effective Oct 29, 2026. Not for navigation; verify with current FAA charts and the Chart Supplement.
Airport
At a glance
- Identifiers
- FAA 9D1
- Location
- Gregory, South Dakota (Gregory County). 1 NM SE of the city center
- Elevation
- 2,174.5 ft MSL
- Position
- 43.2218° N, 99.4034° W
- Control tower
- No, non-towered
- Sectional chart
- Omaha
- Magnetic variation
- 7° E (2000)
- Fuel
- 100LL, Jet A
- Ownership
- Publicly owned, open to the public
- Attendance
- Daily DAWN-DUSK
1 runway
Runways
| Runway | Length × width | Surface | Edge lights |
|---|---|---|---|
| 13/31 | 3,799 × 60 ft | Asphalt, excellent condition | Medium intensity |
Runway ends and traffic pattern
| End | Pattern | Glide slope lights | Instrument | Displaced threshold | Landing distance |
|---|---|---|---|---|---|
| 13 | Left traffic | 2-light PAPI, left | None listed | None listed | Not listed |
| 31 | Left traffic | 2-light PAPI, left | None listed | None listed | Not listed |
VHF
Frequencies
- CTAF
- 122.8
- Actvt Mirl Ry 13/31 & Papi Rys 13 & 31 - Ctaf.
- UNICOM
- 122.8
- Automated Unicom.
Before you go
Brief 9D1 in Ascent EFB.
Current weather, NOTAMs and the airport diagram for Gregory Muni/Flynn Fld, in the app on iPhone and iPad.
Not for navigation. Verify with current FAA charts and the Chart Supplement before flight.
Source: FAA NASR 28-day subscription, cycle effective Oct 29, 2026. Airport data changes every 28 days and NOTAMs can override it at any time.