| Tail Number / N-Number | N21LM |
| Manufacturer | CESSNA |
| Model | 560 |
| Manufacturer's Serial Number | 560-0117 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 11 seats |
| Weight Class | CLASS 2 (12,500 - 19,999 pounds gross take off weight) |
| Engine Manufacturer | P&W CANADA |
| Engine Model | JT15D-4 |
| Engine Type | Turbo-fan |
| Number of Engines | 2 engines |
| Thrust per Engine | 2,500 pounds-force (11.1 kN) |
| Total Thrust | 5,000 pounds-force (22.2 kN) |
| Type of Registrant | LLC |
| Owner Name | N21LM LLC |
| Street | C/O CAPITOL SERVICES INC 1675 S STATE ST STE B |
| City | DOVER |
| State | DE |
| Zip Code | 19901-5140 |
| Region | Eastern |
| County | Kent County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2017-11-25 |
| Certificate Issue Date | 2021-02-03 |
| Last Action Date | 2021-04-20 |
| Expiration Date | 2028-02-29 |
| Status | Valid Registration |
| Mode S Code | 50334057 |
| Mode S Code Hex | A1B82F |
Deregistered Aircraft 1 of 1. This aircraft was previously assigned the N-number N21LM.
| Tail Number / N-Number | N21LM |
| Manufacturer | MILLHOLLAND LEONARD E |
| Model | GUPPY SNS-2 |
| Manufacturer's Serial Number | 16 |
| Aircraft Type | Fixed wing single engine |
| Category | Land |
| Builder Certification | Not 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 |
| County | Kent County |
| Last Action Date | 1983-09-11 |
| Last Status | N-Number assigned as a Non Type Certificated (Amateur) but has not been registered that is pending cancellation |
| Cancellation Date | 2011-04-25 |