Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N790SD.
| Tail Number / N-Number | N790SD |
| Manufacturer | PIPER |
| Model | PA-31T |
| Year Built | 1978 |
| Manufacturer's Serial Number | 31T-7920004 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 8 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | P&W CANADA |
| Engine Model | PT6A-60A |
| Engine Type | Turbo-prop |
| Number of Engines | 2 engines |
| Horsepower per Engine | 1,050 hp (783 kW) |
| Total Horsepower | 2,100 hp (1,567 kW) |
| Average Cruising Speed | 162 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | SILVERWINGS AIR AMBULANCE LTD CO |
| Street | PO BOX 5040 |
| City | SILVER CITY |
| State | NM |
| Zip Code | 88062-5040 |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1978-10-25 |
| Certificate Issue Date | 1997-05-21 |
| Last Action Date | 2009-05-19 |
| Last Status | Registration Expired – Pending Cancellation |
| Cancellation Date | 2015-05-15 |
| Mode S Code | 52534631 |
| Mode S Code Hex | AAB999 |