| Tail Number / N-Number | N858 |
| Manufacturer | SCHLEICHER |
| Model | ASW-15B |
| Manufacturer's Serial Number | 15231 |
| Aircraft Type | Glider |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | NONE |
| Engine Model | NONE |
| Number of Engines | 0 engines |
| Average Cruising Speed | 75 miles per hour |
| Type of Registrant | Individual |
| Owner Name | DAVENPORT JOHN P |
| Street | 15971 NE 95TH WAY |
| City | REDMOND |
| State | WA |
| Zip Code | 98052-7550 |
| Region | Northwest Mountain |
| County | King County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1974-04-05 |
| Certificate Issue Date | 2021-03-29 |
| Last Action Date | 2021-03-29 |
| Expiration Date | 2028-03-31 |
| Status | Valid Registration |
| Mode S Code | 52742417 |
| Mode S Code Hex | ABC50F |
Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N858.
| Tail Number / N-Number | N858 |
| Manufacturer | SIKORSKY |
| Model | S-55A |
| Manufacturer's Serial Number | 551272 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 12 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Type of Registrant | Corporation |
| Owner Name | SIKORSKY AIRCRAFT DIVISION UNITED AIRCRAFT CORP |
| County | King County |
| Last Status | Valid Registration |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N858.
| Tail Number / N-Number | N858 |
| Manufacturer | CURTISS |
| Model | JN4D |
| Year Built | 1920 |
| Manufacturer's Serial Number | 136 |
| 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 | 67 miles per hour |
| Type of Registrant | Individual |
| Owner Name | MARQUESS A J/MARQUESS AUTO CO |
| County | King County |
| Last Status | Valid Registration |
| Cancellation Date | 1927-11-26 |