| Effective Date: | 2007-01-18 |
| Airport Site Number: | 26396.*A |
| Airport Code: | BFI |
| Airport Location: | Seattle, WA |
| FAA Region: | ANM - Northwest Mountain |
| Runway: | 31L |
| Runway Dimension:: | 10000 x 200 ft |
| ILS Type: | Instrument Landing System/Distance Measuring Equipment |
| ILS Category: | I |
| Facility Owner: | Federal Aviation Admin |
| Facility Operator: | Federal Aviation Admin |
| Approach Bearing: | 310 (Degrees Magnetic) |
| Magnetic Variation: | 20E |
| Identification Code: | I-CHJ |
| Frequency: | 110.90 MHz |
| Longitude/Latitude: | 122-18-53.998W/47-32-41.459N -122.314999/47.544850 |
| Course Width: | 3.64° |
| Dist. From Runway Stop End: | 1810 ft |
| Type: | Standard Glide Slope |
| Angle: | 3.10° |
| Frequency: | 330.80 MHz |
| Longitude/Latitude: | 122-17-38.225W/47-31-17.107N -122.293951/47.521419 |
| Dist. From Runway Approach End: | -1010 ft |
| Elevation: | 15.00 ft |
| Channel: | 046X |
| Longitude/Latitude: | 122-17-28.329W/47-30-54.080N -122.291203/47.515022 |
| Dist. From Runway Approach End: | 1810 ft |