| Tail Number / N-Number | N121AP |
| Manufacturer | GULFSTREAM AEROSPACE |
| Model | G-IV |
| Year Built | 1994 |
| Manufacturer's Serial Number | 1239 |
| 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 | Corporation |
| Owner Name | BANK OF UTAH TRUSTEE |
| Street | 50 S 200 E STE 110 |
| City | SALT LAKE CITY |
| State | UT |
| Zip Code | 84111-1617 |
| Region | Northwest Mountain |
| County | Salt Lake County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1994-04-06 |
| Certificate Issue Date | 2016-11-30 |
| Last Action Date | 2022-09-02 |
| Expiration Date | 2029-11-30 |
| Status | Valid Registration |
| Mode S Code | 50053567 |
| Mode S Code Hex | A05777 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N121AP.
| Tail Number / N-Number | N121AP |
| Manufacturer | CESSNA |
| Model | 188A |
| Year Built | 1971 |
| Manufacturer's Serial Number | 18800833 |
| 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) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | O-470 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 230 hp (172 kW) |
| Average Cruising Speed | 96 miles per hour |
| County | Salt Lake County |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1972-04-22 |
| Last Action Date | 2011-05-27 |
| Last Status | N-Number Assigned – but has not yet been registered |
| Cancellation Date | 2011-05-26 |