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Knoop Airport
Marble Rock, Iowa, United States
- IATA
- None
- ICAO
- None
- Local time
- --:--
- Elevation
- 331 m (1,086 ft)
Knoop Airport is a closed airfield in Marble Rock, Iowa, United States. It has no IATA or ICAO code.
Location
- Type
- Closed
- Serves
- Marble Rock
- Region
- Iowa
- Country
- United States
- Coordinates
- 42°58′16″N 92°59′42″W
42.97101, -92.99496 · Map - Elevation
- 331 m (1,086 ft)
- Time zone
- America/Chicago
Navigation Aids within 60 km 6
| Ident | Name | Type | Frequency | Distance |
|---|---|---|---|---|
| IY | Chukk | NDB | 417 kHz | 28 km |
| MC | Surff | NDB | 348 kHz | 29 km |
| MCW | Mason City | VORTAC | 114.90 MHz | 31 km |
| HPT | Hampton | NDB | 230 kHz | 33 km |
| AL | Price | NDB | 382 kHz | 55 km |
| FXY | Forest City | NDB | 359 kHz | 59 km |
Data last refreshed 28 September 2026. Not for navigation. About the data.