| Tail Number / N-Number | N957S |
| Manufacturer | PIPER |
| Model | PA-23-250 |
| Year Built | 1962 |
| Manufacturer's Serial Number | 27-2136 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 6 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 | 2 engines |
| Horsepower per Engine | 250 hp (187 kW) |
| Total Horsepower | 500 hp (373 kW) |
| Average Cruising Speed | 150 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | SKYMARK AIRLINES |
| Street | 6964 AIRPORT BOULEVARD |
| City | SACRAMENTO |
| State | CA |
| Zip Code | 95837 |
| Region | Western-Pacific |
| County | Sacramento County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Last Action Date | 1977-01-14 |
| Status | Certificate of Registration has been revoked |
| Mode S Code | 53250070 |
| Mode S Code Hex | AD5038 |