| Tail Number / N-Number | N3999T |
| Manufacturer | CAMERON BALLOONS US |
| Model | N-77 |
| Year Built | 1990 |
| Manufacturer's Serial Number | 5662 |
| Aircraft Type | Balloon |
| 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 | NONE |
| Engine Model | NONE |
| Number of Engines | 0 engines |
| Type of Registrant | Corporation |
| Owner Name | PORT TOWNSEND AERO MUSEUM |
| Street | 105 AIRPORT RD |
| City | PORT TOWNSEND |
| State | WA |
| Zip Code | 98368-9716 |
| Region | Northwest Mountain |
| County | Jefferson County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1990-11-19 |
| Certificate Issue Date | 2017-02-02 |
| Last Action Date | 2022-09-29 |
| Expiration Date | 2030-02-28 |
| Status | Valid Registration |
| Mode S Code | 51123735 |
| Mode S Code Hex | A4A7DD |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N3999T.
| Tail Number / N-Number | N3999T |
| Manufacturer | PIPER |
| Model | PA-28R-180 |
| Year Built | 1968 |
| Manufacturer's Serial Number | 28R-30354 |
| 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 | 107 miles per hour |
| Type of Registrant | Individual |
| Owner Name | HUMMELL D L |
| Street | 1103 TERRANCE DR |
| City | ANDREWS |
| State | TX |
| Zip Code | 79714 |
| Region | Southwestern |
| County | Jefferson County |
| Certificate Issue Date | 1970-12-10 |
| Last Status | Valid Registration |
| Cancellation Date | 1971-04-05 |