| Tail Number / N-Number | N121W |
| Manufacturer | TEXTRON AVIATION INC |
| Model | 172S |
| Year Built | 2019 |
| Manufacturer's Serial Number | 172S12276 |
| 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) |
| Engine Manufacturer | LYCOMING |
| Engine Model | IO-360-L2A |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Type of Registrant | LLC |
| Owner Name | N121W LLC |
| Street | 2630 MAIN ST STE 104 |
| City | UNION GAP |
| State | WA |
| Zip Code | 98903-1776 |
| Region | Northwest Mountain |
| County | Yakima County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2019-03-29 |
| Certificate Issue Date | 2019-04-30 |
| Last Action Date | 2021-11-09 |
| Expiration Date | 2029-04-30 |
| Status | Valid Registration |
| Mode S Code | 50054535 |
| Mode S Code Hex | A0595D |
Deregistered Aircraft 1 of 4. This aircraft was previously assigned the N-number N121W.
| Tail Number / N-Number | N121W |
| Manufacturer | CESSNA |
| Model | TU206G |
| Manufacturer's Serial Number | U20606227 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 6 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 132 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | SOUTHWEST AVIATION INC |
| Street | PO BOX 387 |
| City | FAIRACRES |
| State | NM |
| Zip Code | 88033-0387 |
| County | Yakima County |
| Country | US |
| Certificate Issue Date | 1999-09-09 |
| Last Action Date | 1999-09-09 |
| Last Status | Valid Registration |
| Cancellation Date | 2000-11-24 |
| Exported To | MEXICO |
Deregistered Aircraft 2 of 4. This aircraft was previously assigned the N-number N121W.
| Tail Number / N-Number | N121W |
| Manufacturer | BONN EUGENE G |
| Model | CHALLENGER I |
| Year Built | 1988 |
| Manufacturer's Serial Number | 0988-0256 |
| 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 | BOMBARDIER |
| Engine Model | ROTAX (ALL) |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Type of Registrant | Individual |
| Owner Name | BONN EUGENE G |
| Street | 8891 AIRPORT RD NE A 10 |
| City | BLAINE |
| State | MN |
| Zip Code | 55449 |
| County | Yakima County |
| Country | US |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1993-09-16 |
| Certificate Issue Date | 1993-08-26 |
| Last Action Date | 2007-07-20 |
| Last Status | Registration Expired – Pending Cancellation |
| Cancellation Date | 2013-06-13 |
Deregistered Aircraft 3 of 4. This aircraft was previously assigned the N-number N121W.
| Tail Number / N-Number | N121W |
| Manufacturer | WILSON J H |
| Model | BABY CYCLONE |
| Manufacturer's Serial Number | 1 |
| 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) |
| Number of Engines | 1 engine |
| Type of Registrant | Individual |
| Owner Name | HART DALE |
| Street | 106 MELROSE ST |
| City | LAFAYETTE |
| State | LA |
| Zip Code | 70501 |
| Region | Southwestern |
| County | Yakima County |
| Certificate Issue Date | 1967-05-23 |
| Last Status | Valid Registration |
| Cancellation Date | 1975-02-14 |
Deregistered Aircraft 4 of 4. This aircraft was previously assigned the N-number N121W.
| Tail Number / N-Number | N121W |
| Manufacturer | OGDEN AERONAUTICAL CORP |
| Model | OSPREY |
| Year Built | 1930 |
| Manufacturer's Serial Number | 103 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 6 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 3 engines |
| Type of Registrant | Individual |
| Owner Name | ELBERT E SCOTT |
| Street | GENERAL DELIVERY |
| City | MUNNSVILLE |
| State | NY |
| Zip Code | 13409 |
| Region | Eastern |
| County | Yakima County |
| Certificate Issue Date | 1948-02-18 |
| Last Status | Valid Registration |
| Cancellation Date | 1955-11-18 |