| Tail Number / N-Number | N21AH |
| Manufacturer | HARRIS PAUL ANDREW |
| Model | RV-4 |
| Manufacturer's Serial Number | 1961 |
| 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) |
| Engine Manufacturer | LYCOMING |
| Engine Model | 0-320 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Type of Registrant | Individual |
| Owner Name | HARRIS PAUL ANDREW |
| Street | 2681 FORD RD |
| City | CHEYENNE |
| State | WY |
| Zip Code | 82009-8509 |
| Region | Northwest Mountain |
| County | Laramie County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1995-11-14 |
| Certificate Issue Date | 1994-08-18 |
| Last Action Date | 2020-08-25 |
| Expiration Date | 2028-01-31 |
| Status | Valid Registration |
| Mode S Code | 50333461 |
| Mode S Code Hex | A1B731 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N21AH.
| Tail Number / N-Number | N21AH |
| Manufacturer | BELL |
| Model | 206L-3 |
| Manufacturer's Serial Number | 51328 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 7 seats |
| Weight Class | CLASS 2 (12,500 - 19,999 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Type of Registrant | Corporation |
| County | Laramie County |
| Last Status | N-Number Assigned – but has not yet been registered |
| Cancellation Date | 1990-11-20 |
| Exported To | GERMANY |