Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N81005.
| Tail Number / N-Number | N81005 |
| Manufacturer | HILLER |
| Model | 1100 |
| Year Built | 1963 |
| Manufacturer's Serial Number | 1 |
| Aircraft Type | Rotorcraft |
| 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 | ALLISON |
| Engine Model | 250 SER 250HP |
| Engine Type | Turbo-prop |
| Number of Engines | 1 engine |
| Horsepower | 250 hp (187 kW) |
| Average Cruising Speed | 95 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | HILLER AVIATION MUSEUM |
| Street | 601 SKYWAY RD |
| City | SAN CARLOS |
| State | CA |
| Zip Code | 94070 |
| Country | US |
| Airworthiness Classification | Provisional |
| Airworthiness Date | 1966-01-19 |
| Certificate Issue Date | 2001-03-21 |
| Last Action Date | 2010-12-06 |
| Last Status | Registration Expired - Pending Cancellation |
| Cancellation Date | 2017-09-08 |
| Mode S Code | 52605722 |
| Mode S Code Hex | AB0BD2 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N81005.
| Tail Number / N-Number | N81005 |
| Manufacturer | COMMONWEALTH |
| Model | 185 |
| Manufacturer's Serial Number | 1801 |
| 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 | 86 miles per hour |
| Type of Registrant | Individual |
| Owner Name | WALL GROVER A |
| Street | 709 N LARAMIE AVE |
| City | CHICAGO |
| State | IL |
| Zip Code | 60021 |
| Region | Great Lakes |
| Certificate Issue Date | 1950-06-07 |
| Last Status | Valid Registration |
| Cancellation Date | 1951-12-04 |
| Mode S Code | 52605722 |
| Mode S Code Hex | AB0BD2 |