| Tail Number / N-Number | N6631A |
| Manufacturer | CESSNA |
| Model | 172 |
| Year Built | 1956 |
| Manufacturer's Serial Number | 28731 |
| 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 | CONT MOTOR |
| Engine Model | 0-300 SER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 145 hp (108 kW) |
| Average Cruising Speed | 105 miles per hour |
| Type of Registrant | Co-Ownership |
| Owner Name | UNTERNAEHRER ROBERT U TRUSTEE |
| Other Names |
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| Street | 25852 HIGHWAY Y |
| City | BRUNSWICK |
| State | MO |
| Zip Code | 65236-2138 |
| Region | Central |
| County | Chariton County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1956-05-02 |
| Certificate Issue Date | 2004-06-30 |
| Last Action Date | 2020-07-20 |
| Expiration Date | 2027-12-31 |
| Status | Valid Registration |
| Mode S Code | 52140732 |
| Mode S Code Hex | A8C1DA |