| Tail Number / N-Number | N4989C |
| Manufacturer | SCHEMPP-HIRTH |
| Model | MINI-NIMBUS B |
| Year Built | 1978 |
| Manufacturer's Serial Number | 79 |
| Aircraft Type | Glider |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | NONE |
| Engine Model | NONE |
| Number of Engines | 0 engines |
| Type of Registrant | Individual |
| Owner Name | BERNATZ GERALD F |
| Street | 3624 COLONIA PLACE DR APT 1 |
| City | SAINT LOUIS |
| State | MO |
| Zip Code | 63125-4472 |
| Region | Central |
| County | St. Louis city |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1983-06-23 |
| Certificate Issue Date | 2014-08-04 |
| Last Action Date | 2021-08-19 |
| Expiration Date | 2027-08-31 |
| Status | Valid Registration |
| Mode S Code | 51430546 |
| Mode S Code Hex | A63166 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N4989C.
| Tail Number / N-Number | N4989C |
| Manufacturer | BRANTLY |
| Model | B-2 |
| Manufacturer's Serial Number | 24 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 75 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | AERO ENTERPRISES INC |
| Street | 5515 SOUTH MAIN ST |
| City | ELKHART |
| State | IN |
| Zip Code | 46514 |
| Region | Great Lakes |
| County | St. Louis city |
| Country | US |
| Certificate Issue Date | 1968-01-04 |
| Last Status | Valid Registration |
| Cancellation Date | 1970-12-17 |