| Tail Number / N-Number | N4SQ |
| Manufacturer | HOUK |
| Model | PITTS S-1S |
| Year Built | 1984 |
| Manufacturer's Serial Number | 524620912 |
| 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 | LYCOMING |
| Engine Model | 0-360-A1D |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Average Cruising Speed | 105 miles per hour |
| Type of Registrant | Individual |
| Owner Name | ELLIS DUSTIN D |
| Street | 13187 FM 1160 RD |
| City | EL CAMPO |
| State | TX |
| Zip Code | 77437-5757 |
| Region | Southwestern |
| County | Wharton County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 1984-06-05 |
| Certificate Issue Date | 2022-10-31 |
| Last Action Date | 2022-10-31 |
| Expiration Date | 2029-10-31 |
| Status | Valid Registration |
| Mode S Code | 51124616 |
| Mode S Code Hex | A4A98E |
Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N4SQ.
| Tail Number / N-Number | N4SQ |
| Manufacturer | ISRAEL AIRCRAFT INDUSTRIES |
| Model | 1124A |
| Manufacturer's Serial Number | 307 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 12 seats |
| Weight Class | CLASS 2 (12,500 - 19,999 pounds gross take off weight) |
| Number of Engines | 2 engines |
| Type of Registrant | Corporation |
| Owner Name | INCOPAIR INC |
| Street | 2711 CENTERVILLE RD STE 400 |
| City | WILMINGTON |
| State | DE |
| Zip Code | 19808-1645 |
| County | Wharton County |
| Country | US |
| Certificate Issue Date | 2009-12-01 |
| Last Action Date | 2013-01-24 |
| Last Status | Valid Registration |
| Cancellation Date | 2013-03-01 |
| Exported To | VENEZUELA |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N4SQ.
| Tail Number / N-Number | N4SQ |
| Manufacturer | PIPER |
| Model | PA-34-200T |
| Manufacturer's Serial Number | 34-7870351 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 7 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 2 engines |
| Average Cruising Speed | 105 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | ANOMALY INC |
| Street | 674 E H ST |
| City | BENICIA |
| State | CA |
| Zip Code | 94510-3573 |
| County | Wharton County |
| Country | US |
| Certificate Issue Date | 1998-08-31 |
| Last Action Date | 1998-09-28 |
| Last Status | Valid Registration |
| Cancellation Date | 2000-07-27 |
| Exported To | CANADA |