| Tail Number / N-Number | N4977E |
| Manufacturer | HILLER |
| Model | UH-12A |
| Year Built | 1951 |
| Manufacturer's Serial Number | 254 |
| 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) |
| Engine Manufacturer | FRANKLIN |
| Engine Model | 6A&6V335 SER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 210 hp (157 kW) |
| Average Cruising Speed | 63 miles per hour |
| Type of Registrant | Individual |
| Owner Name | WYLLIE ASHTON R J TRUSTEE |
| Street | 503 MILL BROOK RD |
| City | THORNTON |
| State | NH |
| Zip Code | 03285-6349 |
| Region | New England |
| County | Grafton County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Multiple |
| Airworthiness Date | 1983-08-01 |
| Certificate Issue Date | 2018-09-15 |
| Last Action Date | 2021-04-11 |
| Expiration Date | 2028-09-30 |
| Status | Valid Registration |
| Mode S Code | 51426553 |
| Mode S Code Hex | A62D6B |