Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N673NA.
| Tail Number / N-Number | N673NA |
| Manufacturer | VERTOL |
| Model | CH21C |
| Manufacturer's Serial Number | 56-4344 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 21 seats |
| Weight Class | CLASS 2 (12,500 - 19,999 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 76 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | NATIONAL AERONAUTICS AND SPACE ADMINISTRATION |
| Street | WALLOPS STATION |
| City | WALLOPS STATION |
| State | VA |
| Zip Code | 23337 |
| Region | Eastern |
| Last Status | Valid Registration |
| Cancellation Date | 1971-02-03 |
| Mode S Code | 52164012 |
| Mode S Code Hex | A8E80A |