| Tail Number / N-Number | N901X |
| Manufacturer | GULFSTREAM AEROSPACE CORP |
| Model | GV-SP (G550) |
| Year Built | 2019 |
| Manufacturer's Serial Number | 5603 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 20 seats |
| Weight Class | CLASS 3 (20,000+ pounds gross take off weight) |
| Engine Manufacturer | ROLLS DEUT |
| Engine Model | BR700-710C411 |
| Engine Type | Turbo-fan |
| Number of Engines | 2 engines |
| Thrust per Engine | 15,385 pounds-force (68.4 kN) |
| Total Thrust | 30,770 pounds-force (136.9 kN) |
| Type of Registrant | Corporation |
| Owner Name | UNITED STATES STEEL CORP |
| Street | 600 GRANT ST |
| City | PITTSBURGH |
| State | PA |
| Zip Code | 15219-2702 |
| Region | Eastern |
| County | Allegheny County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2019-10-08 |
| Certificate Issue Date | 2020-02-28 |
| Last Action Date | 2022-09-23 |
| Expiration Date | 2030-02-28 |
| Status | Valid Registration |
| Mode S Code | 53072360 |
| Mode S Code Hex | AC74F0 |
Deregistered Aircraft 1 of 3. This aircraft was previously assigned the N-number N901X.
| Tail Number / N-Number | N901X |
| Manufacturer | BERNHARD D/BERNHARD M |
| Model | VANS RV8 |
| Manufacturer's Serial Number | 81051 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Kit Manufacturer | VANS AIRCRAFT INC |
| Kit Model | RV-8 |
| Type of Registrant | Individual |
| Owner Name | ROTGE RAYMOND |
| Street | 6494 BENNETT VALLEY RD |
| City | SANTA ROSA |
| State | CA |
| Zip Code | 95404-9739 |
| County | Allegheny County |
| Country | US |
| Certificate Issue Date | 2005-12-07 |
| Last Action Date | 2008-12-16 |
| Last Status | Second Notice for Re-Registration/Renewal |
| Cancellation Date | 2013-06-21 |
Deregistered Aircraft 2 of 3. This aircraft was previously assigned the N-number N901X.
| Tail Number / N-Number | N901X |
| Manufacturer | BEECH |
| Model | D50C |
| Manufacturer's Serial Number | DH-279 |
| 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) |
| Number of Engines | 2 engines |
| Average Cruising Speed | 167 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | SWEARINGEN AIRCRAFT |
| Street | P O BOX 6904 |
| City | SAN ANTONIO |
| State | TX |
| Zip Code | 78201 |
| Region | Southwestern |
| County | Allegheny County |
| Certificate Issue Date | 1969-03-05 |
| Last Status | Valid Registration |
| Cancellation Date | 1969-11-25 |
Deregistered Aircraft 3 of 3. This aircraft was previously assigned the N-number N901X.
| Tail Number / N-Number | N901X |
| Manufacturer | GRUMMAN |
| Model | G-164A |
| Manufacturer's Serial Number | 422 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 98 miles per hour |
| Type of Registrant | Corporation |
| County | Allegheny County |
| Certificate Issue Date | 1967-09-13 |
| Last Status | Valid Registration |
| Cancellation Date | 1968-03-07 |
| Exported To | GERMANY |