- Airport Identifier
- 4MD9
- Airport Name
- St John Airport
- Location
- Owings Mills, United States
- Field elevation (ft)
- 461 ft
- Airport Type
- Small airport
- Magnetic Variation
- 9.965° E
- Coordinates
- 39.480598449707° N 76.7605972290039° W
| Runway Name | Runway Length | Displaced Threshold (ft) | Runway Heading (°T) | Runway Heading (°M) | Slope | Surface |
|---|---|---|---|---|---|---|
| 02 | 2,600 ft x 120 ft | 300 ft | Unknown | 20 °M | Unknown | Grass |
| 20 | 2,600 ft x 120 ft | N/A | Unknown | 200 °M | Unknown | Grass |