| Tail Number / N-Number | N188TH |
| Manufacturer | RAYTHEON AIRCRAFT COMPANY |
| Model | 400A |
| Year Built | 1999 |
| Manufacturer's Serial Number | RK-244 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 10 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | WILLIAMS |
| Engine Model | FJ44-3AP |
| Engine Type | Turbo-fan |
| Number of Engines | 2 engines |
| Thrust per Engine | 3,052 pounds-force (13.6 kN) |
| Total Thrust | 6,104 pounds-force (27.2 kN) |
| Type of Registrant | LLC |
| Owner Name | HOLTWORTH LLC |
| Street | 369 N 2370 W |
| City | SALT LAKE CITY |
| State | UT |
| Zip Code | 84116-2948 |
| Region | Northwest Mountain |
| County | Salt Lake County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2014-03-06 |
| Certificate Issue Date | 2022-02-24 |
| Last Action Date | 2022-04-07 |
| Expiration Date | 2029-02-28 |
| Status | Valid Registration |
| Mode S Code | 50260025 |
| Mode S Code Hex | A16015 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N188TH.
| Tail Number / N-Number | N188TH |
| Manufacturer | HALLENDORF TOM |
| Model | HALLENDORF/CASSUTT |
| Year Built | 2004 |
| Manufacturer's Serial Number | TH-4 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not 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 | C90 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 95 hp (71 kW) |
| Type of Registrant | Individual |
| Owner Name | HALLENDORF TOM |
| Street | PO BOX 620565 |
| City | REDWOOD CITY |
| State | CA |
| Zip Code | 94062-0565 |
| County | Salt Lake County |
| Country | US |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2004-08-05 |
| Certificate Issue Date | 2004-02-27 |
| Last Action Date | 2004-09-22 |
| Last Status | Valid Registration |
| Cancellation Date | 2007-04-23 |
| Exported To | CANADA |