Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N18789.
| Tail Number / N-Number | N18789 |
| Manufacturer | BEECH |
| Model | D17R |
| Year Built | 1938 |
| Manufacturer's Serial Number | 214 |
| 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 | 151 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | SPARTAN SCHOOL AERONAUTICS |
| Street | GENERAL DELIVERY |
| City | TULSA |
| State | OK |
| Zip Code | 74115 |
| Region | Southwestern |
| Certificate Issue Date | 1943-09-23 |
| Last Status | Valid Registration |
| Cancellation Date | 1948-05-04 |
| Mode S Code | 50257077 |
| Mode S Code Hex | A15E3F |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N18789.
| Tail Number / N-Number | N18789 |
| Manufacturer | BEECH |
| Model | C24R |
| Manufacturer's Serial Number | MC501 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 6 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 178 miles per hour |
| Last Status | The Triennial Aircraft Registration form was mailed and has not been returned by the Post Office |
| Cancellation Date | 1990-07-19 |
| Mode S Code | 50257077 |
| Mode S Code Hex | A15E3F |