Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N3631.
| Tail Number / N-Number | N3631 |
| Manufacturer | CUMMINS-VANCRAFT |
| Model | GC-1 |
| Year Built | 1969 |
| Manufacturer's Serial Number | EC-1 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | MCCULLOCH |
| Engine Model | 4318A&E/0-100 |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 72 hp (54 kW) |
| Average Cruising Speed | 86 miles per hour |
| Type of Registrant | Individual |
| Owner Name | CUMMINS WILLIAM E |
| Street | RT 11 BOX 604 |
| City | OLYMPIA |
| State | WA |
| Zip Code | 98501 |
| Country | US |
| Airworthiness Classification | Experimental |
| Certificate Issue Date | 1969-09-29 |
| Last Action Date | 1977-01-14 |
| Last Status | Revoked – Canceled |
| Cancellation Date | 2011-07-06 |
| Mode S Code | 51014754 |
| Mode S Code Hex | A419EC |