| Tail Number / N-Number | N5521S |
| Manufacturer | CESSNA |
| Model | 172S |
| Year Built | 2014 |
| Manufacturer's Serial Number | 172S11421 |
| 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 | IO-360-L2A |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 180 hp (134 kW) |
| Type of Registrant | LLC |
| Owner Name | CHRISTIANSEN AVIATION LLC |
| Street | MAILBOXES ETC #1710 2207 CONCORD PIKE |
| City | WILMINGTON |
| State | DE |
| Zip Code | 19803 |
| Region | Eastern |
| County | New Castle County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2014-05-16 |
| Certificate Issue Date | 2022-08-15 |
| Last Action Date | 2022-08-15 |
| Expiration Date | 2029-08-31 |
| Status | Valid Registration |
| Mode S Code | 51604545 |
| Mode S Code Hex | A70965 |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N5521S.
| Tail Number / N-Number | N5521S |
| Manufacturer | CESSNA |
| Model | A188 |
| Manufacturer's Serial Number | 1880021 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 1 seat |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Average Cruising Speed | 96 miles per hour |
| Type of Registrant | Individual |
| Owner Name | HALLDORSON JOHN DBA |
| Other Names |
|
| Street | BOX 82 |
| City | CAVALIER |
| State | ND |
| Zip Code | 58228 |
| County | New Castle County |
| Country | US |
| Certificate Issue Date | 1992-12-07 |
| Last Action Date | 1995-12-20 |
| Last Status | The Triennial Aircraft Registration form was mailed and has not been returned by the Post Office |
| Cancellation Date | 1996-04-17 |