| Tail Number / N-Number | N505S |
| Manufacturer | BELL HELICOPTER TEXTRON CANADA |
| Model | 505 |
| Manufacturer's Serial Number | 65124 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 5 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 1 engine |
| Type of Registrant | Corporation |
| Owner Name | MULLIGAN AVIATION |
| Street | 3 SOUTHGATE AVE |
| City | ANNAPOLIS |
| State | MD |
| Zip Code | 21401-2709 |
| Region | Eastern |
| County | Anne Arundel County |
| Country | US |
| Fractional Ownership | No |
| Certificate Issue Date | 2018-07-31 |
| Last Action Date | 2021-02-14 |
| Expiration Date | 2028-07-31 |
| Status | Valid Registration |
| Mode S Code | 51447023 |
| Mode S Code Hex | A64E13 |
Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N505S.
| Tail Number / N-Number | N505S |
| Manufacturer | CESSNA |
| Model | 340A |
| Manufacturer's Serial Number | 340A0947 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 6 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Number of Engines | 2 engines |
| Average Cruising Speed | 90 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | ATLANTIC AIR LLC |
| Street | 4 SEAFOOD DR |
| City | MOUNT PLEASANT |
| State | SC |
| Zip Code | 29464-4387 |
| County | Anne Arundel County |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1980-01-11 |
| Certificate Issue Date | 2003-11-24 |
| Last Action Date | 2005-06-21 |
| Last Status | Valid Registration |
| Cancellation Date | 2007-05-02 |
| Exported To | MEXICO |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N505S.
| Tail Number / N-Number | N505S |
| Manufacturer | HUGHES |
| Model | 369HS |
| Manufacturer's Serial Number | 830505S |
| Aircraft Type | Rotorcraft |
| 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 | ALLISON |
| Engine Model | 250-C20 SER |
| Engine Type | Turbo-prop |
| Number of Engines | 1 engine |
| Horsepower | 420 hp (313 kW) |
| Average Cruising Speed | 112 miles per hour |
| Type of Registrant | Corporation |
| Owner Name | CARIBBEAN FISHING CO INC |
| Street | 600 GRANT STREET 60TH FL |
| City | PITTSBURGH |
| State | PA |
| Zip Code | 15219 |
| County | Anne Arundel County |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1993-10-29 |
| Certificate Issue Date | 1995-05-05 |
| Last Action Date | 1999-12-14 |
| Last Status | The Triennial Aircraft Registration form was mailed and has not been returned by the Post Office |
| Cancellation Date | 2002-03-22 |