| Tail Number / N-Number | N921AU |
| Manufacturer | AERO UNION CORP |
| Model | P3A |
| Manufacturer's Serial Number | 151385 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 3 (20,000+ pounds gross take off weight) |
| Engine Manufacturer | ALLISON |
| Engine Model | T-56-A-10W |
| Engine Type | Turbo-prop |
| Number of Engines | 4 engines |
| Horsepower per Engine | 4,500 hp (3,357 kW) |
| Total Horsepower | 18,000 hp (13,428 kW) |
| Type of Registrant | LLC |
| Owner Name | AIRSTRIKE FIREFIGHTERS LLC |
| Street | 3028 PEACEKEEPER WAY |
| City | MCCLELLAN |
| State | CA |
| Zip Code | 95652-2502 |
| Region | Western-Pacific |
| County | Yolo County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Restricted |
| Airworthiness Date | 2011-04-21 |
| Certificate Issue Date | 2022-02-10 |
| Last Action Date | 2022-02-10 |
| Expiration Date | 2029-02-28 |
| Status | Valid Registration |
| Mode S Code | 53140764 |
| Mode S Code Hex | ACC1F4 |