| Tail Number / N-Number | N6638U |
| Manufacturer | HUGHES |
| Model | OH-6A |
| Manufacturer's Serial Number | 6716030 |
| 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) |
| Number of Engines | 1 engine |
| Type of Registrant | Government |
| Owner Name | USDA APHIS WS ATOC |
| Street | AVIATION TRAINING & OPERATIONS 1223 N AIRPORT RD |
| City | CEDAR CITY |
| State | UT |
| Zip Code | 84721-8412 |
| Region | Northwest Mountain |
| County | Iron County |
| Country | US |
| Fractional Ownership | No |
| Certificate Issue Date | 2011-06-16 |
| Last Action Date | 2023-01-22 |
| Expiration Date | 2027-06-30 |
| Status | Valid Registration |
| Mode S Code | 52141341 |
| Mode S Code Hex | A8C2E1 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N6638U.
| Tail Number / N-Number | N6638U |
| Manufacturer | MOONEY |
| Model | M20D |
| Manufacturer's Serial Number | 133 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 127 miles per hour |
| County | Iron County |