| Identifier: | ZIRSO |
| NAS ID: | ZIRSO |
| Name: | ZIRSO |
| Fix Type: | Civilian |
| Fix Use: | |
| State: | MAINE |
| ICAO Region: | K6 |
| Latitude: | 43-33-16.370N (43.554500) |
| Longitude: | 070-15-57.090W (-70.265900) |
| Magnetic Variance: | 14.5 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 |