| Tail Number / N-Number | N21LT |
| Manufacturer | CESSNA |
| Model | P210N |
| Year Built | 1979 |
| Manufacturer's Serial Number | P21000216 |
| Aircraft Type | Fixed wing single 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) |
| Engine Manufacturer | CONT MOTOR |
| Engine Model | TSIO-520 SER |
| Engine Type | Reciprocating |
| Number of Engines | 1 engine |
| Horsepower | 300 hp (224 kW) |
| Average Cruising Speed | 141 miles per hour |
| Type of Registrant | LLC |
| Owner Name | FRONTLINE AVIATORS LLC |
| Street | 13110 NE 177TH PL PMB 115 |
| City | WOODINVILLE |
| State | WA |
| Zip Code | 98072-5740 |
| Region | Northwest Mountain |
| County | King County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 1979-02-20 |
| Certificate Issue Date | 2020-04-09 |
| Last Action Date | 2023-01-22 |
| Expiration Date | 2027-04-30 |
| Status | Valid Registration |
| Mode S Code | 50334065 |
| Mode S Code Hex | A1B835 |
Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N21LT.
| Tail Number / N-Number | N21LT |
| Manufacturer | HARRIS LIN MCMINN |
| Model | ZODIAC 601 HDS |
| Manufacturer's Serial Number | 3148LHI |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not 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 |
| Type of Registrant | Individual |
| Owner Name | REGISTRATION PENDING |
| Street | 1915 S ORCHARD ST |
| City | BOISE |
| State | ID |
| Zip Code | 83705-3638 |
| County | King County |
| Country | US |
| Last Action Date | 1997-07-17 |
| Last Status | Registration pending |
| Cancellation Date | 1999-12-02 |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N21LT.
| Tail Number / N-Number | N21LT |
| Manufacturer | TROUTMAN LEONARD R |
| Model | QUICKIE Q2 |
| Manufacturer's Serial Number | 2700 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not 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 |
| County | King County |
| Last Status | N-Number Assigned – but has not yet been registered |