| Tail Number / N-Number | N181LL |
| Manufacturer | SHEARER WILLIAM JOSEPH |
| Model | AVID MARK IV |
| Year Built | 1996 |
| Manufacturer's Serial Number | 1300B |
| 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) |
| Engine Manufacturer | SUBARU |
| Engine Model | ALL MDLS A/B |
| Engine Type | 4 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 400 hp (298 kW) |
| Type of Registrant | Individual |
| Owner Name | SHEARER WILLIAM J |
| Street | 14550 N BARTON LAKE DR |
| City | VICKSBURG |
| State | MI |
| Zip Code | 49097-8773 |
| Region | Great Lakes |
| County | Kalamazoo County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1996-11-09 |
| Certificate Issue Date | 1996-10-28 |
| Last Action Date | 2021-03-09 |
| Expiration Date | 2028-07-31 |
| Status | Valid Registration |
| Mode S Code | 50242550 |
| Mode S Code Hex | A14568 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N181LL.
| Tail Number / N-Number | N181LL |
| Manufacturer | BEECH |
| Model | B90 |
| Manufacturer's Serial Number | LJ440 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 9 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 2 engines |
| Average Cruising Speed | 202 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | CRITICAL CARE SERVICES INC DBA |
| Other Names |
|
| Street | 336 CHESTER STREET |
| City | ST PAUL |
| State | MN |
| Zip Code | 55107 |
| County | Kalamazoo County |
| Country | US |
| Certificate Issue Date | 1986-10-21 |
| Last Action Date | 1991-01-31 |
| Last Status | The Triennial Aircraft Registration form was mailed and has not been returned by the Post Office |
| Cancellation Date | 1991-04-09 |