| Tail Number / N-Number | N423A |
| Manufacturer | ALLEN JOHN W |
| Model | ZENITH STOL CH-701 |
| Year Built | 2009 |
| Manufacturer's Serial Number | 7-7187 |
| 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 | ROTAX |
| Engine Model | 912S |
| Engine Type | 4 Cycle |
| Number of Engines | 1 engine |
| Horsepower | 100 hp (75 kW) |
| Kit Manufacturer | ZENITH ACFT CO |
| Kit Model | STOL CH 701 |
| Type of Registrant | Individual |
| Owner Name | GILBERT JOHN K |
| Street | 4009 LOB CV |
| City | AUSTIN |
| State | TX |
| Zip Code | 78730-1475 |
| Region | Southwestern |
| County | Travis County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Experimental |
| Airworthiness Date | 2010-05-28 |
| Certificate Issue Date | 2016-03-07 |
| Last Action Date | 2021-10-18 |
| Expiration Date | 2029-03-31 |
| Status | Valid Registration |
| Mode S Code | 51203304 |
| Mode S Code Hex | A506C4 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N423A.
| Tail Number / N-Number | N423A |
| Manufacturer | SIKORSKY |
| Model | S-55 |
| Manufacturer's Serial Number | 55561 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 12 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 85 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | PETROLEUM HELICOPTERS INC |
| Street | PO BOX 13055 |
| City | NEW ORLEANS |
| State | LA |
| Zip Code | 70185 |
| Region | Southwestern |
| County | Travis County |
| Country | US |
| Certificate Issue Date | 1955-08-08 |
| Last Status | Valid Registration |
| Cancellation Date | 1957-07-02 |
| Exported To | CANADA |