| Tail Number / N-Number | N123C |
| Manufacturer | MOONEY |
| Model | M-18L |
| Year Built | 1950 |
| Manufacturer's Serial Number | 82 |
| Aircraft Type | Fixed wing single engine |
| 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 | LYCOMING |
| Engine Model | 0-145B SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 65 hp (48 kW) |
| Average Cruising Speed | 103 miles per hour |
| Type of Registrant | Co-Ownership |
| Owner Name | KING STEPHEN W |
| Other Names |
|
| Street | 242 CREEKWOOD RD |
| City | KERRVILLE |
| State | TX |
| Zip Code | 78028-7065 |
| Region | Southwestern |
| County | Kerr County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1957-05-14 |
| Certificate Issue Date | 2013-03-05 |
| Last Action Date | 2021-11-08 |
| Expiration Date | 2029-03-31 |
| Status | Valid Registration |
| Mode S Code | 50057411 |
| Mode S Code Hex | A05F09 |