| Tail Number / N-Number | N999TT |
| Manufacturer | ROBINSON HELICOPTER |
| Model | R22 BETA |
| Year Built | 1989 |
| Manufacturer's Serial Number | 1150 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 2 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | LYCOMING |
| Engine Model | 0-320 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Type of Registrant | Individual |
| Owner Name | KNUEVEN TIMOTHY P |
| Street | 236 LAWLER DR |
| City | BROWNSBORO |
| State | AL |
| Zip Code | 35741-9456 |
| Region | Southern |
| County | Madison County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1989-09-26 |
| Certificate Issue Date | 2023-01-17 |
| Last Action Date | 2023-01-17 |
| Expiration Date | 2030-01-31 |
| Status | Valid Registration |
| Mode S Code | 53372715 |
| Mode S Code Hex | ADF5CD |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N999TT.
| Tail Number / N-Number | N999TT |
| Manufacturer | GLASER LOREN |
| Model | VERIEZE |
| Manufacturer's Serial Number | 690 |
| 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 |
| Type of Registrant | Individual |
| Owner Name | SPRANKLE GEORGE W |
| Street | 12410 KNIGGE RD |
| City | CYPRESS |
| State | TX |
| Zip Code | 77429 |
| County | Madison County |
| Country | US |
| Certificate Issue Date | 1985-11-25 |
| Last Action Date | 1990-11-07 |
| Last Status | Valid Registration |
| Cancellation Date | 1991-06-12 |