| Tail Number / N-Number | N671 |
| Manufacturer | CENTRAL COPTERS INC |
| Model | LANCAIR IV-P PROPJET |
| Year Built | 2012 |
| Manufacturer's Serial Number | L4-596 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | ALLIEDSIGN |
| Engine Model | TPE331-6 |
| Engine Type | Turbo-prop |
| Number of Engines | 1 engine |
| Horsepower | 750 hp (560 kW) |
| Kit Manufacturer | LANCAIR INTL INC |
| Kit Model | LANCAIR IV P |
| Type of Registrant | Corporation |
| Owner Name | CENTRAL COPTERS INC |
| Street | PO BOX 7300 |
| City | BOZEMAN |
| State | MT |
| Zip Code | 59771-7300 |
| Region | Northwest Mountain |
| County | Gallatin County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2012-11-13 |
| Certificate Issue Date | 2012-05-09 |
| Last Action Date | 2020-12-15 |
| Expiration Date | 2028-05-31 |
| Status | Valid Registration |
| Mode S Code | 52157556 |
| Mode S Code Hex | A8DF6E |
Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N671.
| Tail Number / N-Number | N671 |
| Manufacturer | CENTRAL COPTERS INC |
| Model | LANCAIR IV-P |
| Year Built | 2005 |
| Manufacturer's Serial Number | LIV423 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | AMA/EXPR |
| Engine Model | UNKNOWN ENG |
| Number of Engines | 1 engine |
| Kit Manufacturer | LANCAIR INTL INC |
| Kit Model | LANCAIR IV P |
| Type of Registrant | Individual |
| Owner Name | DUFFY MARK |
| Street | PO BOX 1924 |
| City | BOZEMAN |
| State | MT |
| Zip Code | 59771-1924 |
| County | Gallatin County |
| Country | US |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2005-11-02 |
| Certificate Issue Date | 2004-10-13 |
| Last Action Date | 2008-11-18 |
| Last Status | The Triennial Aircraft Registration form was mailed and has not been returned by the Post Office |
| Cancellation Date | 2011-05-17 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N671.
| Tail Number / N-Number | N671 |
| Manufacturer | TRAVEL AIR MFG CO |
| Model | 2000 |
| Year Built | 1927 |
| Manufacturer's Serial Number | 192 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 3 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 79 miles per hour |
| Type of Registrant | Individual |
| Owner Name | GREUNKE KARL A |
| Street | 1426 N DURKEE STREET |
| City | APPLETON |
| State | WI |
| Zip Code | 54911 |
| Region | Great Lakes |
| County | Gallatin County |
| Last Status | Valid Registration |
| Cancellation Date | 1929-01-30 |