| Tail Number / N-Number | N4TD |
| Manufacturer | GULFSTREAM AEROSPACE |
| Model | GIV-X (G450) |
| Year Built | 2006 |
| Manufacturer's Serial Number | 4044 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 22 seats |
| Weight Class | CLASS 3 (20,000+ pounds gross take off weight) |
| Engine Manufacturer | ROLLS-ROYC |
| Engine Model | TAY 611SER |
| Engine Type | Turbo-fan |
| Number of Engines | 2 engines |
| Thrust per Engine | 12,450 pounds-force (55.4 kN) |
| Total Thrust | 24,900 pounds-force (110.8 kN) |
| Type of Registrant | LLC |
| Owner Name | TETON HOLDINGS II LLC |
| Street | 150 N RIVERSIDE PLZ STE 5100 |
| City | CHICAGO |
| State | IL |
| Zip Code | 60606-1595 |
| Region | Great Lakes |
| County | Cook County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2006-03-30 |
| Certificate Issue Date | 2021-04-29 |
| Last Action Date | 2021-12-06 |
| Expiration Date | 2028-04-30 |
| Status | Valid Registration |
| Mode S Code | 51124634 |
| Mode S Code Hex | A4A99C |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N4TD.
| Tail Number / N-Number | N4TD |
| Manufacturer | CESSNA |
| Model | T337G |
| Year Built | 1973 |
| Manufacturer's Serial Number | P337-0093 |
| 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 | CONT MOTOR |
| Engine Model | 0-300 SER |
| Engine Type | Reciprocating |
| Number of Engines | 2 engines |
| Horsepower per Engine | 145 hp (108 kW) |
| Total Horsepower | 290 hp (216 kW) |
| Average Cruising Speed | 142 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | PACIFIC NORTHWEST POWER LEASING LLC |
| Street | PO BOX 1913 |
| City | BILLINGS |
| State | MT |
| Zip Code | 59103-1913 |
| County | Cook County |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1973-04-16 |
| Certificate Issue Date | 1998-07-21 |
| Last Action Date | 2008-06-17 |
| Last Status | The Triennial Aircraft Registration form was mailed and has not been returned by the Post Office |
| Cancellation Date | 2009-11-20 |