- Airport Identifier
- MT06
- Airport Name
- Duncan Airport
- Location
- Helena, United States
- Field elevation (ft)
- 4,260 ft
- Airport Type
- Small airport
- Magnetic Variation
- 6.955° W
- Coordinates
- 46.570461° N 112.175274° W
| Runway Name | Runway Length | Displaced Threshold (ft) | Runway Heading (°T) | Runway Heading (°M) | Slope | Surface |
|---|---|---|---|---|---|---|
| 07 | 1,467 ft x 50 ft | N/A | Unknown | 70 °M | Unknown | Grass |
| 25 | 1,467 ft x 50 ft | N/A | Unknown | 250 °M | Unknown | Grass |