Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N33473.
| Tail Number / N-Number | N33473 |
| Manufacturer | HILLER |
| Model | H-23D |
| Manufacturer's Serial Number | 61-3211 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 75 miles per hour |
| Type of Registrant | Government |
| Owner Name | SOUTHEASTERN OKLAHOMA STATE UNIVERSITY |
| Street | STATION A |
| City | DURANT |
| State | OK |
| Zip Code | 74701 |
| Region | Southwestern |
| Certificate Issue Date | 1975-04-01 |
| Last Status | Valid Registration |
| Cancellation Date | 1976-05-20 |
| Mode S Code | 50724024 |
| Mode S Code Hex | A3A814 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N33473.
| Tail Number / N-Number | N33473 |
| Manufacturer | PIPER |
| Model | J3F-65 |
| Manufacturer's Serial Number | 5984 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | 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 | 67 miles per hour |
| Type of Registrant | Co-Ownership |
| Owner Name | C G FRYE |
| Street | BOX 274 |
| City | ANADAARKO |
| State | OK |
| Zip Code | 73159 |
| Region | Southwestern |
| Certificate Issue Date | 1945-03-10 |
| Last Status | Valid Registration |
| Cancellation Date | 1949-11-15 |
| Mode S Code | 50724024 |
| Mode S Code Hex | A3A814 |