Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N9100R.
| Tail Number / N-Number | N9100R |
| Manufacturer | SIKORSKY |
| Model | HO5-S1 |
| Manufacturer's Serial Number | 580078 |
| 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 | 67 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | UNIVERSITY OF OKLAHOMA |
| Street | GENERAL DELIVERY |
| City | NORMAN |
| State | OK |
| Zip Code | 73019 |
| Region | Southwestern |
| Certificate Issue Date | 1959-11-06 |
| Last Status | Valid Registration |
| Cancellation Date | 1963-12-20 |
| Mode S Code | 53114423 |
| Mode S Code Hex | AC9913 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N9100R.
| Tail Number / N-Number | N9100R |
| Manufacturer | CESSNA |
| Model | A188B |
| Year Built | 1975 |
| Manufacturer's Serial Number | 18802115T |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | IO 520 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 285 hp (213 kW) |
| Average Cruising Speed | 108 miles per hour |
| Type of Registrant | Individual |
| Owner Name | SALE REPORTED |
| Street | UNKNOWN |
| City | XXXX |
| State | OK |
| Zip Code | 73125 |
| Country | US |
| Airworthiness Classification | Restricted |
| Airworthiness Date | 1975-03-25 |
| Last Action Date | 2005-09-29 |
| Last Status | Sale reported |
| Cancellation Date | 2006-06-09 |
| Exported To | BOLIVIA |
| Mode S Code | 53114423 |
| Mode S Code Hex | AC9913 |