Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N73897.
| Tail Number / N-Number | N73897 |
| Manufacturer | HILLER |
| Model | YH32 |
| Manufacturer's Serial Number | 55-4966 |
| Aircraft Type | Rotorcraft |
| 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 | 2 engines |
| Average Cruising Speed | 67 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | UNIVERSITY OF OKLAHOMA |
| Street | AN AGENCY OF THE STATE OF OKLAHOM |
| City | NORMAN |
| State | OK |
| Zip Code | 73159 |
| Region | Southwestern |
| Certificate Issue Date | 1962-04-30 |
| Last Status | Valid Registration |
| Cancellation Date | 1970-06-22 |
| Mode S Code | 52366166 |
| Mode S Code Hex | A9EC76 |