| Tail Number / N-Number | N9173L |
| Manufacturer | DESANTI MICHAEL P |
| Model | DOUGLAS LARK |
| Year Built | 1996 |
| Manufacturer's Serial Number | 5001 |
| 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 | CONT MOTOR |
| Engine Model | C85 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 85 hp (63 kW) |
| Type of Registrant | Individual |
| Owner Name | DESANTI MICHAEL P |
| Street | 4180 FALCON DR |
| City | FT LUPTON |
| State | CO |
| Zip Code | 80621 |
| Region | Northwest Mountain |
| County | Weld County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1996-08-22 |
| Certificate Issue Date | 1995-11-28 |
| Last Action Date | 2021-06-08 |
| Expiration Date | 2028-10-31 |
| Status | Valid Registration |
| Mode S Code | 53131570 |
| Mode S Code Hex | ACB378 |
Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N9173L.
| Tail Number / N-Number | N9173L |
| Manufacturer | LEARJET INC |
| Model | 31 |
| Manufacturer's Serial Number | 029 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 10 seats |
| Weight Class | CLASS 2 (12,500 - 19,999 pounds gross take off weight) |
| Number of Engines | 2 engines |
| Type of Registrant | Non Citizen Corporation |
| Owner Name | LEARJET INC |
| Street | 8220 WEST HARRY |
| City | WICHITA |
| State | KS |
| Zip Code | 67209 |
| County | Weld County |
| Country | US |
| Certificate Issue Date | 1990-12-26 |
| Last Action Date | 1990-12-27 |
| Last Status | Valid Registration |
| Cancellation Date | 1991-01-25 |
| Exported To | MEXICO |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N9173L.
| Tail Number / N-Number | N9173L |
| Manufacturer | BELLANCA |
| Model | 7ACA |
| Manufacturer's Serial Number | 3072 |
| 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 | 71 miles per hour |
| County | Weld County |
| Last Status | N-Number Assigned – but has not yet been registered |
| Cancellation Date | 1988-08-04 |