| Tail Number / N-Number | N66 |
| Manufacturer | BEECH |
| Model | 300 |
| Year Built | 1987 |
| Manufacturer's Serial Number | FF-1 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 19 seats |
| Weight Class | CLASS 2 (12,500 - 19,999 pounds gross take off weight) |
| Engine Manufacturer | P&W CANADA |
| Engine Model | PT6A-60A |
| Engine Type | Turbo-prop |
| Number of Engines | 2 engines |
| Horsepower per Engine | 1,050 hp (783 kW) |
| Total Horsepower | 2,100 hp (1,567 kW) |
| Average Cruising Speed | 142 miles per hour |
| Type of Registrant | Government |
| Owner Name | FEDERAL AVIATION ADMINISTRATION |
| Street | 6500 S MACARTHUR BLVD HNGR 9E BLDG 10 ROOM 303 |
| City | OKLAHOMA CITY |
| State | OK |
| Zip Code | 73169 |
| Region | Southwestern |
| County | Oklahoma County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1994-12-30 |
| Certificate Issue Date | 1988-09-01 |
| Last Action Date | 2020-11-13 |
| Expiration Date | 2028-04-30 |
| Status | Valid Registration |
| Mode S Code | 52130737 |
| Mode S Code Hex | A8B1DF |
Deregistered Aircraft 1 of 4. This aircraft was previously assigned the N-number N66.
| Tail Number / N-Number | N66 |
| Manufacturer | BEECH |
| Model | C18S |
| Manufacturer's Serial Number | 8052 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 10 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 2 engines |
| Average Cruising Speed | 165 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | CIVIL AERONAUTICS ADMIN |
| Street | GENERAL DELIVERY |
| City | WASHINGTON |
| State | DC |
| Zip Code | 20001 |
| Region | Eastern |
| County | Oklahoma County |
| Certificate Issue Date | 1946-12-24 |
| Last Status | Valid Registration |
| Cancellation Date | 1951-01-29 |
Deregistered Aircraft 2 of 4. This aircraft was previously assigned the N-number N66.
| Tail Number / N-Number | N66 |
| Manufacturer | VERVILLE |
| Model | PT-10C |
| Manufacturer's Serial Number | 31-521 |
| Aircraft Type | Fixed wing single engine |
| 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) |
| Number of Engines | 1 engine |
| Type of Registrant | Corporation |
| Owner Name | AIR STANDARD INC |
| Street | NATL PRESS BUILDING |
| City | WASHINGTON |
| State | DC |
| Zip Code | 20310 |
| Region | Eastern |
| County | Oklahoma County |
| Certificate Issue Date | 1941-02-02 |
| Last Status | Valid Registration |
| Cancellation Date | 1945-07-23 |
Deregistered Aircraft 3 of 4. This aircraft was previously assigned the N-number N66.
| Tail Number / N-Number | N66 |
| Manufacturer | BEECH |
| Model | B17L |
| Manufacturer's Serial Number | B17L-26 |
| Aircraft Type | Fixed wing single 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 | 1 engine |
| Average Cruising Speed | 114 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | CIVIL AERONAUTICS AUTHORITY |
| Street | GENERAL DELIVERY |
| City | WASHINGTON DC |
| State | DC |
| Zip Code | 20310 |
| Region | Eastern |
| County | Oklahoma County |
| Last Status | Valid Registration |
| Cancellation Date | 1940-06-24 |
Deregistered Aircraft 4 of 4. This aircraft was previously assigned the N-number N66.
| Tail Number / N-Number | N66 |
| Manufacturer | CURTISS WRIGHT |
| Model | JN4D |
| Manufacturer's Serial Number | 6000 |
| Aircraft Type | Fixed wing single engine |
| 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) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 79 miles per hour |
| Type of Registrant | Individual |
| Owner Name | KEILA TONY |
| Street | SOUTHERN AIRPORT 87 & HARLEM STS |
| City | CHICAGO |
| State | IL |
| Zip Code | 60021 |
| Region | Great Lakes |
| County | Oklahoma County |
| Last Status | Valid Registration |
| Cancellation Date | 1932-12-19 |