| Tail Number / N-Number | N399M |
| Manufacturer | LIVINGSTON KEITH A |
| Model | RV 4 |
| Year Built | 1990 |
| Manufacturer's Serial Number | 999 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | LYCOMING |
| Engine Model | IO-360 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 200 hp (149 kW) |
| Type of Registrant | Individual |
| Owner Name | JOHNSEY STANFORD WALLACE |
| Street | 1720 W SANTA GERTRUDIS ST |
| City | KINGSVILLE |
| State | TX |
| Zip Code | 78363-3451 |
| Region | Southwestern |
| County | Kleberg County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2020-02-05 |
| Certificate Issue Date | 2020-01-23 |
| Last Action Date | 2023-01-19 |
| Expiration Date | 2030-01-31 |
| Status | Valid Registration |
| Mode S Code | 51122513 |
| Mode S Code Hex | A4A54B |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N399M.
| Tail Number / N-Number | N399M |
| Manufacturer | MAUGERI |
| Model | OSPREY 1 |
| Year Built | 1977 |
| Manufacturer's Serial Number | 44JM |
| Aircraft Type | Fixed wing single engine |
| Category | Sea |
| Builder Certification | Not Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | C85 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 85 hp (63 kW) |
| Type of Registrant | Individual |
| Owner Name | MAUGERI JOSEPH W |
| Street | 1000 CONCORD BLDG 66 W FLAGLER ST |
| City | MIAMI |
| State | FL |
| Zip Code | 33130 |
| County | Kleberg County |
| Country | US |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1977-07-06 |
| Certificate Issue Date | 1977-08-02 |
| Last Action Date | 1991-03-16 |
| Last Status | Registration Expired – Pending Cancellation |
| Cancellation Date | 2012-11-14 |