Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N6840.
| Tail Number / N-Number | N6840 |
| Manufacturer | JOHNSTON R R / COLLINSKE A J |
| Model | CEE-JAY R-1-A |
| Manufacturer's Serial Number | 001 |
| Aircraft Type | Fixed wing single engine |
| 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) |
| Number of Engines | 1 engine |
| Type of Registrant | Individual |
| Owner Name | CURL GERALD A |
| Street | 1655 BERKSHIRE |
| City | THOUSAND OAKS |
| State | CA |
| Zip Code | 91360 |
| Region | Western-Pacific |
| Certificate Issue Date | 1956-10-04 |
| Last Status | Valid Registration |
| Cancellation Date | 1974-04-24 |
| Mode S Code | 52212153 |
| Mode S Code Hex | A9146B |