| Tail Number / N-Number | N21RG |
| Manufacturer | CESSNA |
| Model | T207 |
| Year Built | 1969 |
| Manufacturer's Serial Number | 20700066 |
| 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 | GTSIO-520-C |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 340 hp (254 kW) |
| Average Cruising Speed | 67 miles per hour |
| Type of Registrant | LLC |
| Owner Name | MACAIR AVIATION LLC |
| Street | 140 N VALLEY RD |
| City | XENIA |
| State | OH |
| Zip Code | 45385-9301 |
| Region | Great Lakes |
| County | Greene County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1969-04-23 |
| Certificate Issue Date | 2020-10-28 |
| Last Action Date | 2020-10-28 |
| Expiration Date | 2027-10-31 |
| Status | Valid Registration |
| Mode S Code | 50334247 |
| Mode S Code Hex | A1B8A7 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N21RG.
| Tail Number / N-Number | N21RG |
| Manufacturer | GRIMM |
| Model | KR-1 |
| Manufacturer's Serial Number | M526 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 85 miles per hour |
| County | Greene County |
| Last Status | The Triennial Aircraft Registration form was mailed and has not been returned by the Post Office |
| Cancellation Date | 1988-09-09 |