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| Effective Date: | 2007-01-18 |
| Airport Site Number: | 12402.*A |
| Airport Code: | HLN |
| Airport Location: | Helena, MT |
| FAA Region: | ANM - Northwest Mountain |
| Runway: | 27 |
| Runway Dimension:: | 9000 x 150 ft |
| ILS Type: | Instrument Landing System |
| ILS Category: | I |
| Facility Owner: | Federal Aviation Admin |
| Facility Operator: | Federal Aviation Admin |
| Approach Bearing: | 267 (Degrees Magnetic) |
| Magnetic Variation: | 16E |
| Localizer Type: | Localizer |
| Identification Code: | I-HLN |
| Frequency: | 110.10 MHz |
| Longitude/Latitude: | 112-00-08.439W/46-36-32.890N -112.002344/46.609136 |
| Course Width: | 3.93° |
| Dist. From Runway Stop End: | 1201 ft |
| Type: | Standard Glide Slope |
| Angle: | 3.00° |
| Frequency: | 334.40 MHz |
| Longitude/Latitude: | 111-57-59.219W/46-36-15.952N -111.966450/46.604431 |
| Dist. From Runway Approach End: | -1019 ft |
| Elevation: | 3845.80 ft |
| Type: | Middle Marker Beacon Only |
| Longitude/Latitude: | 111-57-02.785W/46-36-04.064N -111.950774/46.601129 |
| Dist. from Runway Approach End: | 3100 ft |
| Type: | Outer Marker Beacon Only |
| Name: | FERRI |
| Longitude/Latitude: | 111-51-04.201W/46-35-08.396N -111.851167/46.585666 |
| Dist. from Runway Approach End: | 28770 ft |