Heldeberg Designs Marathon registrations
2 Heldeberg Designs Marathon aircraft on the FAA register (FAA model MARATHON), newest first.
| N-number | Year | Aircraft |
|---|---|---|
| N149DK | 2003 | Heldeberg Designs Marathon |
| N59MF | 1997 | Heldeberg Designs Marathon |
Source: FAA Aircraft Registry, October 2026. Each N-number links to its aircraft page with registration record, history and accident data.
