| Tail Number / N-Number | N181MB |
| Manufacturer | ROBINSON HELICOPTER |
| Model | R44 |
| Year Built | 2016 |
| Manufacturer's Serial Number | 2425 |
| 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 | LYCOMING |
| Engine Model | O-540-F1B5 |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 260 hp (194 kW) |
| Type of Registrant | LLC |
| Owner Name | SPITZER HELICOPTER LLC |
| Street | 5958 ROD AVE |
| City | WOODLAND HILLS |
| State | CA |
| Zip Code | 91367-1003 |
| Region | Western-Pacific |
| County | Yolo County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2016-01-06 |
| Certificate Issue Date | 2017-08-01 |
| Last Action Date | 2020-03-15 |
| Expiration Date | 2027-08-31 |
| Status | Valid Registration |
| Mode S Code | 50242570 |
| Mode S Code Hex | A14578 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N181MB.
| Tail Number / N-Number | N181MB |
| Manufacturer | BROWN MARION E |
| Model | QUICKIE Q-2 |
| Year Built | 1990 |
| Manufacturer's Serial Number | 2204 |
| 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 | VOLKSWAGEN |
| Engine Model | CONVERSION |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 36 hp (27 kW) |
| Type of Registrant | Individual |
| Owner Name | BROWN MARION E |
| Street | 6240 SW 5TH PLACE |
| City | PLANTATION |
| State | FL |
| Zip Code | 33317 |
| County | Yolo County |
| Country | US |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1991-05-07 |
| Certificate Issue Date | 1988-08-22 |
| Last Action Date | 2005-12-20 |
| Last Status | The Triennial Aircraft Registration form was mailed and has not been returned by the Post Office |
| Cancellation Date | 2007-03-22 |