Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N3961Z.
| Tail Number / N-Number | N3961Z |
| Manufacturer | PIPER |
| Model | PA-18 |
| Year Built | 1962 |
| Manufacturer's Serial Number | 18-7824 |
| 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) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 97 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | N GREENSPAN TRACTOR & EQUIPMENT CO |
| Street | 14TH & E WASHINGTON STREETS |
| City | BROWNSVILLE |
| State | TX |
| Zip Code | 78520 |
| Region | Southwestern |
| Certificate Issue Date | 1963-07-25 |
| Last Status | Valid Registration |
| Cancellation Date | 1964-04-12 |
| Exported To | MEXICO |
| Mode S Code | 51115646 |
| Mode S Code Hex | A49BA6 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N3961Z.
| Tail Number / N-Number | N3961Z |
| Manufacturer | SOUTHWEST MISSOURI ULTRALIGHTS |
| Model | QUICKSILVER MX II |
| Year Built | 1983 |
| Manufacturer's Serial Number | 1296 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | BOMBARDIER |
| Engine Model | ROTAX (ALL) |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Type of Registrant | Individual |
| Owner Name | SALE REPORTED |
| Street | RT 1 BOX 202A |
| City | WENTWORTH |
| State | MO |
| Zip Code | 64873 |
| Country | US |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1983-06-14 |
| Last Action Date | 1991-12-16 |
| Last Status | Sale Reported – Canceled |
| Cancellation Date | 2013-06-12 |
| Mode S Code | 51115646 |
| Mode S Code Hex | A49BA6 |