| Tail Number / N-Number | N129WC |
| Manufacturer | CROWL WILLIAM D |
| Model | HUMMELBIRD |
| Year Built | 2007 |
| Manufacturer's Serial Number | CROWL001 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Light Sport |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | AMA/EXPR |
| Engine Model | UNKNOWN ENG |
| Number of Engines | 1 engine |
| Type of Registrant | Individual |
| Owner Name | NIELSEN MARTIN M |
| Street | 2520 RIO LISBO CT |
| City | PUNTA GORDA |
| State | FL |
| Zip Code | 33950-6318 |
| Region | Southern |
| County | Charlotte County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2007-02-12 |
| Certificate Issue Date | 2014-07-21 |
| Last Action Date | 2020-02-14 |
| Expiration Date | 2027-07-31 |
| Status | Valid Registration |
| Mode S Code | 50073430 |
| Mode S Code Hex | A07718 |