| Tail Number / N-Number | N121JR |
| Manufacturer | CESSNA |
| Model | T210M |
| Year Built | 1977 |
| Manufacturer's Serial Number | 21061726 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 6 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | TSIO-520 SER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 300 hp (224 kW) |
| Average Cruising Speed | 141 miles per hour |
| Type of Registrant | Individual |
| Owner Name | KLOTZ GEOFFREY B |
| Street | 11126 BROADVIEW DR |
| City | MOOR PARK |
| State | CA |
| Zip Code | 93021 |
| Region | Western-Pacific |
| County | Ventura County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1977-02-07 |
| Certificate Issue Date | 1993-01-12 |
| Last Action Date | 2022-01-18 |
| Expiration Date | 2029-05-31 |
| Status | Valid Registration |
| Mode S Code | 50054101 |
| Mode S Code Hex | A05841 |