| Tail Number / N-Number | N87WS |
| Manufacturer | CESSNA |
| Model | 441 |
| Year Built | 1977 |
| Manufacturer's Serial Number | 441-0009 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 10 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | AIRESEARCH |
| Engine Model | TPE331 SERIES |
| Engine Type | Turbo-prop |
| Number of Engines | 2 engines |
| Horsepower per Engine | 904 hp (674 kW) |
| Total Horsepower | 1,808 hp (1,349 kW) |
| Average Cruising Speed | 131 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | KEYSTONE AERIAL SURVEYS INC |
| Street | PO BOX 21059 |
| City | PHILADELPHIA |
| State | PA |
| Zip Code | 19114-0559 |
| Region | Eastern |
| County | Philadelphia County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Restricted |
| Airworthiness Date | 1978-03-13 |
| Certificate Issue Date | 2019-09-14 |
| Last Action Date | 2022-04-20 |
| Expiration Date | 2029-09-30 |
| Status | Valid Registration |
| Mode S Code | 52773002 |
| Mode S Code Hex | ABF602 |