| Tail Number / N-Number | N51HH |
| Manufacturer | HAWKER BEECHCRAFT CORP |
| Model | HAWKER 900XP |
| Year Built | 2010 |
| Manufacturer's Serial Number | HA-0169 |
| Aircraft Type | Fixed wing multi engine |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 17 seats |
| Weight Class | CLASS 3 (20,000+ pounds gross take off weight) |
| Engine Manufacturer | HONEYWELL |
| Engine Model | TFE731-50R |
| Engine Type | Turbo-fan |
| Number of Engines | 2 engines |
| Thrust per Engine | 5,000 pounds-force (22.2 kN) |
| Total Thrust | 10,000 pounds-force (44.5 kN) |
| Type of Registrant | LLC |
| Owner Name | EFFICIENT AERO SERVICES LLC |
| Street | 1313 S ANDREWS AVE |
| City | FORT LAUDERDALE |
| State | FL |
| Zip Code | 33316-1837 |
| Region | Southern |
| County | Broward County |
| Country | US |
| Fractional Ownership | No |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2010-07-30 |
| Certificate Issue Date | 2022-11-18 |
| Last Action Date | 2022-11-18 |
| Expiration Date | 2029-11-30 |
| Status | Valid Registration |
| Mode S Code | 51457715 |
| Mode S Code Hex | A65FCD |
Deregistered Aircraft 1 of 2. This aircraft was previously assigned the N-number N51HH.
| Tail Number / N-Number | N51HH |
| Manufacturer | AGUSTA SPA |
| Model | A109E |
| Year Built | 2004 |
| Manufacturer's Serial Number | 11621 |
| Aircraft Type | Rotorcraft |
| Category | Land |
| Builder Certification | Type Certificated |
| Number of Seats | 8 seats |
| Weight Class | CLASS 1 (Up to 12,499 pounds gross take off weight) |
| Engine Manufacturer | P&W CANADA |
| Engine Model | PW206C |
| Engine Type | Turbo-shaft |
| Number of Engines | 2 engines |
| Horsepower per Engine | 561 hp (419 kW) |
| Total Horsepower | 1,122 hp (837 kW) |
| Type of Registrant | Individual |
| Owner Name | SALE REPORTED |
| Street | UNKNOWN |
| City | XXX |
| State | OK |
| Zip Code | 73125 |
| County | Broward County |
| Country | US |
| Airworthiness Classification | Standard |
| Airworthiness Date | 2004-11-19 |
| Last Action Date | 2005-03-04 |
| Last Status | Sale reported |
| Cancellation Date | 2005-03-04 |
| Exported To | BRAZIL |
Deregistered Aircraft 2 of 2. This aircraft was previously assigned the N-number N51HH.
| Tail Number / N-Number | N51HH |
| Manufacturer | HENDERSON HARLEY L |
| Model | HLH RV-4 |
| Manufacturer's Serial Number | H00186 |
| 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 | Broward County |
| Last Status | The Triennial Aircraft Registration form was mailed and has not been returned by the Post Office |
| Cancellation Date | 1989-07-22 |