Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N4291A.
| Tail Number / N-Number | N4291A |
| Manufacturer | PIPER |
| Model | L-21A |
| Manufacturer's Serial Number | 18-923 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | LYCOMING |
| Engine Model | 0-290 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 140 hp (104 kW) |
| Average Cruising Speed | 97 miles per hour |
| Type of Registrant | Government |
| Owner Name | LEWIS A WILSON TECHNICAL CENTER |
| Street | LUCON DR & GRAND BLVD |
| City | DEER PARK |
| State | NY |
| Zip Code | 11729 |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1958-03-14 |
| Certificate Issue Date | 1974-07-19 |
| Last Action Date | 1990-10-06 |
| Last Status | Registration Expired – Pending Cancellation |
| Cancellation Date | 2012-11-21 |
| Mode S Code | 51217612 |
| Mode S Code Hex | A51F8A |