| Tail Number / N-Number | N551M |
| Manufacturer | MALOTT CORWIN |
| Model | S-51 |
| Manufacturer's Serial Number | 0129 |
| Aircraft Type | Glider |
| 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) |
| Number of Engines | 1 engine |
| Kit Manufacturer | STEWART 51 INC |
| Kit Model | S-51D |
| Type of Registrant | Individual |
| Owner Name | MALOTT CORWIN |
| Street | 6801 E 44TH AVE |
| City | SPOKANE |
| State | WA |
| Zip Code | 99223-1408 |
| Region | Northwest Mountain |
| County | Spokane County |
| Country | US |
| Fractional Ownership | No |
| Certificate Issue Date | 2011-02-17 |
| Last Action Date | 2022-11-18 |
| Expiration Date | 2030-02-28 |
| Status | Valid Registration |
| Mode S Code | 51602065 |
| Mode S Code Hex | A70435 |
Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N551M.
| Tail Number / N-Number | N551M |
| Manufacturer | BEECH |
| Model | E-90 |
| Manufacturer's Serial Number | LW328 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 10 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 2 engines |
| Type of Registrant | Corporation |
| Owner Name | SIGNAL LAUNDRY INC |
| Street | 419 MCGROARTY ST |
| City | SAN GABRIEL |
| State | CA |
| Zip Code | 91776-2302 |
| County | Spokane County |
| Country | US |
| Certificate Issue Date | 1991-01-02 |
| Last Action Date | 1997-04-21 |
| Last Status | Valid Registration |
| Cancellation Date | 1997-06-19 |
| Exported To | FRANCE |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N551M.
| Tail Number / N-Number | N551M |
| Manufacturer | NICHOLAS BEAZLEY |
| Model | NB-3G |
| Manufacturer's Serial Number | 44 |
| 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) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 146 miles per hour |
| Type of Registrant | Individual |
| Owner Name | MIKE BENEDICT DYNKA |
| Street | 248 JEFFERSON ST |
| City | NORTH VANDERGRIFT |
| State | PA |
| Zip Code | 15690 |
| Region | Eastern |
| County | Spokane County |
| Certificate Issue Date | 1942-03-30 |
| Last Status | Valid Registration |
| Cancellation Date | 1948-03-11 |