| Tail Number / N-Number | N21L |
| Manufacturer | MINIPLANE |
| Model | BNF |
| Year Built | 1967 |
| Manufacturer's Serial Number | 111 |
| 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 | 0-235 SERIES |
| Engine Type | 4 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 115 hp (86 kW) |
| Average Cruising Speed | 86 miles per hour |
| Type of Registrant | Individual |
| Owner Name | MIZER JAMES D |
| Street | PO BOX 728 |
| City | HAILEY |
| State | ID |
| Zip Code | 83333-0661 |
| Region | Northwest Mountain |
| County | Blaine County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1988-08-01 |
| Certificate Issue Date | 2017-03-01 |
| Last Action Date | 2023-01-22 |
| Expiration Date | 2027-03-31 |
| Status | Valid Registration |
| Mode S Code | 50334043 |
| Mode S Code Hex | A1B823 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N21L.
| Tail Number / N-Number | N21L |
| Manufacturer | CESSNA |
| Model | 180 |
| Manufacturer's Serial Number | 31663 |
| 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 | 121 miles per hour |
| Type of Registrant | Individual |
| Owner Name | LEAR WILLIAM P |
| Street | 3171 S BUNDY DR |
| City | SANTA MONICA |
| State | CA |
| Zip Code | 90401 |
| Region | Western-Pacific |
| County | Blaine County |
| Certificate Issue Date | 1955-05-26 |
| Last Status | Valid Registration |
| Cancellation Date | 1957-04-04 |