| Tail Number / N-Number | N81TR |
| Manufacturer | IRVING STEVEN |
| Model | IRBD-4 |
| Manufacturer's Serial Number | 009 |
| 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) |
| Engine Manufacturer | LYCOMING |
| Engine Model | IO 540 SER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 260 hp (194 kW) |
| Type of Registrant | Individual |
| Owner Name | CARTER TED J |
| Street | 470 AERO LN |
| City | BIGFORK |
| State | MT |
| Zip Code | 59911-6560 |
| Region | Northwest Mountain |
| County | Flathead County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2010-12-10 |
| Certificate Issue Date | 2021-12-09 |
| Last Action Date | 2021-12-09 |
| Expiration Date | 2028-12-31 |
| Status | Valid Registration |
| Mode S Code | 52604274 |
| Mode S Code Hex | AB08BC |
Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N81TR.
| Tail Number / N-Number | N81TR |
| Manufacturer | WILLEY DOUGLAS J |
| Model | TEAM ROCKET F-1 |
| Manufacturer's Serial Number | 049 |
| 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 | TEAM INC |
| Kit Model | ROCKET F-1 |
| Type of Registrant | Individual |
| Owner Name | SAVAGE JAMES P |
| Street | 816 N EDWARDS ST |
| City | CLOVIS |
| State | NM |
| Zip Code | 88101-6443 |
| County | Flathead County |
| Country | US |
| Certificate Issue Date | 2002-02-05 |
| Last Action Date | 2004-12-02 |
| Last Status | Valid Registration |
| Cancellation Date | 2005-03-09 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N81TR.
| Tail Number / N-Number | N81TR |
| Manufacturer | ROCKWELL INTERNATIONAL |
| Model | 690C |
| Manufacturer's Serial Number | 11690 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 11 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 2 engines |
| Type of Registrant | Corporation |
| Owner Name | CASPER AIR SERVICE |
| Street | 300 AIRPORT RD NATRONA CNTY INT A |
| City | CASPER |
| State | WY |
| Zip Code | 82604 |
| County | Flathead County |
| Country | US |
| Certificate Issue Date | 1985-06-24 |
| Last Action Date | 1991-01-31 |
| Last Status | The Triennial Aircraft Registration form was mailed and has not been returned by the Post Office |
| Cancellation Date | 1993-02-09 |