| Tail Number / N-Number | N4575C |
| Manufacturer | GRUMMAN |
| Model | G-21A |
| Manufacturer's Serial Number | B-120 |
| Aircraft Type | Fixed wing multi engine |
| Category | Amphibian |
| Builder Certification | Type Certificated |
| Number of Seats | 8 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | P&W |
| Engine Model | R-985 SERIES |
| Engine Type | Reciprocating |
| Number of Engines | 2 engines |
| Horsepower per Engine | 450 hp (336 kW) |
| Total Horsepower | 900 hp (671 kW) |
| Average Cruising Speed | 150 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | SOUTHERN AIRCRAFT CONSULTANCY INC TRUSTEE |
| Street | GLEBE COTTAGE COOKES RD |
| City | BERGH APTON NFLK |
| Zip Code | NR15 1AA |
| Region | European |
| Country | GB |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1983-12-12 |
| Certificate Issue Date | 2023-02-08 |
| Last Action Date | 2023-02-08 |
| Expiration Date | 2030-02-28 |
| Status | Valid Registration |
| Mode S Code | 51307447 |
| Mode S Code Hex | A58F27 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N4575C.
| Tail Number / N-Number | N4575C |
| Manufacturer | CESSNA |
| Model | 170B |
| Manufacturer's Serial Number | 25519 |
| 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 | 105 miles per hour |
| Type of Registrant | Individual |
| Owner Name | STEINHOUR F P |
| Street | 1017 PARK DRIVE |
| City | KEMMERER |
| State | WY |
| Zip Code | 83101 |
| Region | Northwest Mountain |
| Certificate Issue Date | 1955-03-25 |
| Last Status | Valid Registration |
| Cancellation Date | 1957-05-14 |