Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N90634.
| Tail Number / N-Number | N90634 |
| Manufacturer | HILLER |
| Model | OH-23G |
| Year Built | 1964 |
| Manufacturer's Serial Number | 64-15247 |
| 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 | 79 miles per hour |
| Type of Registrant | Government |
| Owner Name | UNIVERSITY OF HAWAII |
| Other Names |
|
| Street | 874 DILLINGHAM BLVD |
| City | HONOLULU |
| State | HI |
| Zip Code | 96817 |
| Country | US |
| Certificate Issue Date | 1977-04-05 |
| Last Action Date | 1977-04-09 |
| Last Status | Revoked – Canceled |
| Cancellation Date | 2017-02-04 |
| Mode S Code | 53104124 |
| Mode S Code Hex | AC8854 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N90634.
| Tail Number / N-Number | N90634 |
| Manufacturer | NORTH AMERICAN |
| Model | AT-6A |
| Year Built | 1942 |
| Manufacturer's Serial Number | 78-7213 |
| 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) |
| Number of Engines | 1 engine |
| Type of Registrant | Corporation |
| Owner Name | NORTHROP AIRCRAFT INC |
| Street | NORTHROP FIELD |
| City | HAWTHORNE |
| State | CA |
| Zip Code | 90250 |
| Region | Western-Pacific |
| Country | US |
| Certificate Issue Date | 1946-02-25 |
| Last Status | Valid Registration |
| Cancellation Date | 1947-11-17 |
| Exported To | PHILIPPINES |
| Mode S Code | 53104124 |
| Mode S Code Hex | AC8854 |