Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N4959P.
| Tail Number / N-Number | N4959P |
| Manufacturer | HECKLER JOHN S |
| Model | SPARROW HAWK II |
| Year Built | 2007 |
| Manufacturer's Serial Number | S0200025 |
| Aircraft Type | Rotorcraft |
| 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 | SUBARU |
| Engine Model | ALL MDLS A/B |
| Engine Type | 4 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 400 hp (298 kW) |
| Kit Manufacturer | GROEN BROTHERS AVIATION USAINC |
| Kit Model | SPARROWHAWK II |
| Type of Registrant | Individual |
| Owner Name | HECKLER JOHN S |
| Street | 1025 N TUCANA LN |
| City | GILBERT |
| State | AZ |
| Zip Code | 85234-4004 |
| Country | US |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2008-03-13 |
| Certificate Issue Date | 2008-02-04 |
| Last Action Date | 2008-02-04 |
| Last Status | Registration Expired – Pending Cancellation |
| Cancellation Date | 2018-01-19 |
| Mode S Code | 51423114 |
| Mode S Code Hex | A6264C |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N4959P.
| Tail Number / N-Number | N4959P |
| Manufacturer | PIPER |
| Model | PA-23-235 |
| Manufacturer's Serial Number | 27560 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 5 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 2 engines |
| Average Cruising Speed | 150 miles per hour |
| Type of Registrant | Individual |
| Owner Name | NOVOTNY MILTON |
| Street | 19 LINDEN RD |
| City | SEEKONK |
| State | MA |
| Zip Code | 02771 |
| Country | US |
| Certificate Issue Date | 1991-05-21 |
| Last Action Date | 1991-05-23 |
| Last Status | Valid Registration |
| Cancellation Date | 1992-01-30 |
| Mode S Code | 51423114 |
| Mode S Code Hex | A6264C |