| Identifier: | BIISN |
| NAS ID: | BIISN |
| Name: | BIISN |
| Fix Type: | Civilian |
| Fix Use: | |
| State: | NEW HAMPSHIRE |
| ICAO Region: | K6 |
| Latitude: | 44-35-22.990N (44.589700) |
| Longitude: | 071-11-00.990W (-71.183600) |
| Magnetic Variance: | 14.4 W as of 9/30/2025 |
| High ARTCC Area: | ZBW |
| Low ARTCC Area: | ZBW |
| Published: | Yes |
| Charts: | |
| Pitch: | No |
| Catch: | No |
| SUA ATCAA: | No |
| IAP |