| Tail Number / N-Number | N521H |
| Manufacturer | BELL TEXTRON CANADA LTD |
| Model | 505 |
| Year Built | 2022 |
| Manufacturer's Serial Number | 65409 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 5 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | SAFRAN |
| Engine Model | ARRIUS 2R |
| Engine Type | Turbo-shaft |
| Number of Engines | 1 engine |
| Horsepower | 460 hp (343 kW) |
| Type of Registrant | Co-Ownership |
| Owner Name | ONE ALPHA ALPHA LLC |
| Other Names |
|
| Street | PO BOX 120 |
| City | NAPA |
| State | CA |
| Zip Code | 94559-0120 |
| Region | Western-Pacific |
| County | Napa County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2022-07-14 |
| Certificate Issue Date | 2022-07-15 |
| Last Action Date | 2022-07-15 |
| Expiration Date | 2029-07-31 |
| Status | Valid Registration |
| Mode S Code | 51506524 |
| Mode S Code Hex | A68D54 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N521H.
| Tail Number / N-Number | N521H |
| Manufacturer | ENSTROM |
| Model | F-28A |
| Year Built | 1976 |
| Manufacturer's Serial Number | 324 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 3 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | LYCOMING |
| Engine Model | HIO-360 SER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 205 hp (153 kW) |
| Average Cruising Speed | 75 miles per hour |
| Type of Registrant | Individual |
| Owner Name | REINHARD JOSEPH R |
| Street | 21177 GARDENA DRIVE |
| City | CUPERTINO |
| State | CA |
| Zip Code | 95014 |
| County | Napa County |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1976-04-16 |
| Certificate Issue Date | 1979-11-28 |
| Last Action Date | 1988-09-03 |
| Last Status | Registration Expired – Pending Cancellation |
| Cancellation Date | 2015-05-19 |