| Tail Number / N-Number | N4251H |
| Manufacturer | MAULE |
| Model | MT-7-235 |
| Manufacturer's Serial Number | 18035C |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Type of Registrant | LLC |
| Owner Name | INFRARED AND INFORMATION SERVICES LC |
| Street | 3334 SE CAMBRIDGE DR |
| City | STUART |
| State | FL |
| Zip Code | 34997-5614 |
| Region | Southern |
| County | Martin County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1998-11-09 |
| Certificate Issue Date | 1999-12-01 |
| Last Action Date | 2021-08-22 |
| Expiration Date | 2029-01-31 |
| Status | Valid Registration |
| Mode S Code | 51210265 |
| Mode S Code Hex | A510B5 |
Deregistered Aircraft 1 of 3. This aircraft was previously assigned the N-number N4251H.
| Tail Number / N-Number | N4251H |
| Manufacturer | LIPSCOMB JOHN J III |
| Model | QUICKSIL MXL SPRINT |
| Manufacturer's Serial Number | 305 |
| 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 | LIPSCOMB JOHN J III |
| Street | 3135 RIDGE RD EX 1 |
| City | FREEDOM |
| State | PA |
| Zip Code | 15042 |
| County | Martin County |
| Country | US |
| Certificate Issue Date | 1992-03-06 |
| Last Action Date | 1992-03-12 |
| Last Status | Valid Registration |
| Cancellation Date | 1995-06-06 |
Deregistered Aircraft 2 of 3. This aircraft was previously assigned the N-number N4251H.
| Tail Number / N-Number | N4251H |
| Manufacturer | PIPER |
| Model | PA-14 |
| Manufacturer's Serial Number | 14-54 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 82 miles per hour |
| Type of Registrant | Individual |
| Owner Name | KNOX V C |
| Street | ROUTE 7 BOX 1334 |
| City | CHARLOTTE |
| State | NC |
| Zip Code | 28201 |
| Region | Eastern |
| County | Martin County |
| Certificate Issue Date | 1950-06-21 |
| Last Status | Valid Registration |
| Cancellation Date | 1952-05-09 |
Deregistered Aircraft 3 of 3. This aircraft was previously assigned the N-number N4251H.
| Tail Number / N-Number | N4251H |
| Manufacturer | MOONEY |
| Model | M20J |
| Manufacturer's Serial Number | 240682 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 4 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 126 miles per hour |
| County | Martin County |