| Tail Number / N-Number | N55421 |
| Manufacturer | PIPER |
| Model | PA-28-180 |
| Year Built | 1973 |
| Manufacturer's Serial Number | 28-7305381 |
| 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) |
| Engine Manufacturer | LYCOMING |
| Engine Model | O&VO-360 SER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Average Cruising Speed | 107 miles per hour |
| Type of Registrant | LLC |
| Owner Name | STEINKE BROTHERS AVIATION LLC |
| Street | 2407 COUNTRY POINTE LN |
| City | WENTZVILLE |
| State | MO |
| Zip Code | 63385-5435 |
| Region | Central |
| County | St. Charles County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1973-04-03 |
| Certificate Issue Date | 2003-04-16 |
| Last Action Date | 2022-08-15 |
| Expiration Date | 2030-01-31 |
| Status | Valid Registration |
| Mode S Code | 51610377 |
| Mode S Code Hex | A710FF |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N55421.
| Tail Number / N-Number | N55421 |
| Manufacturer | BOEING |
| Model | A75 |
| Year Built | 1940 |
| Manufacturer's Serial Number | 75-868 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | 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 |
| Average Cruising Speed | 93 miles per hour |
| Type of Registrant | Individual |
| Owner Name | FUTCH FRANK |
| Street | GENERAL DELIVERY |
| City | LIVE OAK |
| State | FL |
| Zip Code | 32064 |
| Region | Southern |
| County | St. Charles County |
| Certificate Issue Date | 1948-05-26 |
| Last Status | Valid Registration |
| Cancellation Date | 1949-06-03 |