| Tail Number / N-Number | N20451 |
| Manufacturer | CESSNA |
| Model | 172M |
| Year Built | 1972 |
| Manufacturer's Serial Number | 17261297 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | LYCOMING |
| Engine Model | 0-320 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Average Cruising Speed | 108 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | MCMILLAN CUSTOM SERVICE INC |
| Street | 377 AIRPORT RD |
| City | WAYNESBORO |
| State | GA |
| Zip Code | 30830-5513 |
| Region | Southern |
| County | Burke County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1973-01-08 |
| Certificate Issue Date | 2016-02-02 |
| Last Action Date | 2021-09-18 |
| Expiration Date | 2029-02-28 |
| Status | Valid Registration |
| Mode S Code | 50322000 |
| Mode S Code Hex | A1A400 |