| Tail Number / N-Number | N171WC |
| Manufacturer | ROBINSON HELICOPTER COMPANY |
| Model | R44 ASTRO |
| Year Built | 1997 |
| Manufacturer's Serial Number | 0331 |
| 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 | 0-540 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 250 hp (187 kW) |
| Type of Registrant | Government |
| Owner Name | CITY OF EL MONTE POLICE DEPARTMENT |
| Street | 11333 VALLEY BLVD |
| City | EL MONTE |
| State | CA |
| Zip Code | 91731-3210 |
| Region | Western-Pacific |
| County | Los Angeles County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1997-12-03 |
| Certificate Issue Date | 1999-01-15 |
| Last Action Date | 2021-11-10 |
| Expiration Date | 2029-04-30 |
| Status | Valid Registration |
| Mode S Code | 50217333 |
| Mode S Code Hex | A11EDB |