Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N4521D.
| Tail Number / N-Number | N4521D |
| Manufacturer | BEECH |
| Model | G35 |
| Year Built | 1956 |
| Manufacturer's Serial Number | D-4659 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | E225 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 225 hp (168 kW) |
| Average Cruising Speed | 131 miles per hour |
| Type of Registrant | Individual |
| Owner Name | EDSON DOYLE W |
| Street | 1952 PORT LAURENT PL |
| City | NEWPORT BEACH |
| State | CA |
| Zip Code | 92660-7117 |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1956-05-21 |
| Certificate Issue Date | 1996-07-03 |
| Last Action Date | 2002-08-20 |
| Last Status | The Triennial Aircraft Registration form was mailed and has not been returned by the Post Office |
| Cancellation Date | 2002-09-13 |
| Mode S Code | 51276011 |
| Mode S Code Hex | A57C09 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N4521D.
| Tail Number / N-Number | N4521D |
| Manufacturer | ROBINSON HELICOPTER |
| Model | R22 BETA |
| Year Built | 2012 |
| Manufacturer's Serial Number | 4556 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | 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 | O-360-J2A |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 145 hp (108 kW) |
| Type of Registrant | Corporation |
| Owner Name | SPECIALIZED HELICOPTERS LLC |
| Street | 150 AVIATION WAY STE 101 |
| City | WATSONVILLE |
| State | CA |
| Zip Code | 95076-2047 |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2012-03-14 |
| Last Action Date | 2012-04-16 |
| Last Status | Valid Registration |
| Cancellation Date | 2013-03-13 |
| Exported To | BRAZIL |
| Mode S Code | 51276011 |
| Mode S Code Hex | A57C09 |