| Tail Number / N-Number | N129MB |
| Manufacturer | AERO COMMANDER |
| Model | 500 S |
| Year Built | 1971 |
| Manufacturer's Serial Number | 3108 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 7 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | LYCOMING |
| Engine Model | TI0-540 SER |
| Engine Type | Turbo-prop |
| Number of Engines | 2 engines |
| Horsepower per Engine | 310 hp (231 kW) |
| Total Horsepower | 620 hp (463 kW) |
| Average Cruising Speed | 172 miles per hour |
| Type of Registrant | Individual |
| Owner Name | ODONNELL WILLIAM S SR |
| Street | 311 FALL RIVER CT |
| City | HOUSTON |
| State | TX |
| Zip Code | 77024-5611 |
| Region | Southwestern |
| County | Harris County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1971-06-18 |
| Certificate Issue Date | 1988-12-28 |
| Last Action Date | 2021-09-08 |
| Expiration Date | 2029-01-31 |
| Status | Valid Registration |
| Mode S Code | 50073066 |
| Mode S Code Hex | A07636 |