Aircraft History, Specification and Information
Learjet 60
Learjet 60 - N64MG - Business Jet
2001 Learjet 60 - N64MG (sn 224)
Photo taken Aug. 12, 2011
Seattle - Boeing Field / King County Intl, WA - USA (BFI / KBFI)
Photo © Marcel Siegenthaler

The Learjet 60 is a mid-size cabin, medium range business jet aircraft manufactured by Bombardier Aerospace in Wichita, Kansas, USA. The Learjet 60 is powered by two Pratt & Whitney Canada model 305A turbo fan engines producing 4,600 total pounds of thrust. The manufacturer notes the range of the aircraft at 2,405 nautical miles (4,454 km) with NBAA 100 nmi (190 km) reserves, ISA, with 4 passengers and 2 crew. The Learjet 60 does not have the range for direct transoceanic flights from the United States, although it can cross the Atlantic from Newfoundland to the British Isles. The current production Learjet 60XR costs approximately $13.3 million.

Development

The Learjet 60 is an improved version of the Learjet 55, with a longer fuselage and more powerful engines. It first flew in June 1991 and received FAA certification in January 1993.

The modifications that converted the Learjet Model 55 into a Model 60 resulted from an aerodynamics improvement program and a need to increase the capacity of the Learjet product line. Several of these modifications were a first for Learjet, including an all new inboard wing cuff added to the inboard sections of the “Longhorn” wing and an all new wing-to-body fairing. By increasing the wing chord and the leading edge droop, the wing cuff improved handling during approach and landing while the wing-to-body fairing reduced the interference drag between the wing and the fuselage. Since the engines were new for this aircraft, a new engine pylon had to be designed.

The lines of the cockpit have not changed but the fuselage was lengthened. In addition, the blend between the fuselage and the empennage was all new. While it appears as if area ruling was the intention of the blending, the blend design was really driven by attaching the original Learjet Model 35 empennage onto the larger Learjet Model 60 fuselage.

The final aerodynamic improvements to the Model 60 included the creation of the distinctive "Ogive" winglet trailing edge. This lengthening of the chord near the interface of the winglet and the wing improved the interaction of the wing’s pressure spike with the winglet’s pressure spike. The result was a significant lowering of the drag in this area and a significant improvement of the wing's efficiency. On the prior “Longhorn” wing the interference between the winglet and the wing nearly canceled the effects of the winglet. The single ventral fin was also replaced with two ventral fins that Learjet called "Delta Fins" to improve stall characteristics and promote aerodynamic stability.

The Learjet 60 is notable for its time-to-climb performance climbing to 41,000 feet (12,497 m) in 18.5 minutes at maximum weight. It also distinguished as the last legacy Learjet, using the wing that designer Bill Lear adapted from the Swiss military aircraft, the FFA P-16. The next generation Learjet is the Learjet 85 and is an all new design by Bombardier Aerospace slated for delivery in 2013.

Production of the Learjet 60 ended in 2007 after 314 aircraft had been built. The Learjet 60XR is the current model in production from Bombardier Aerospace.

Learjet 60XR

Bombardier launched a new variant in 2005 designated the Learjet 60XR and following certification deliveries started in 2007. The Learjet 60XR has an upgraded cabin, Rockwell Collins Pro Line 21 advanced avionics suite and three disc steel wheel brakes.

Raisbeck Engineering is currently in the final stages of developing an aft fuselage locker for the Learjet 60 and 60XR. Slated for first quarter 2011 delivery, this modification under a supplemental type certificate increases luggage capacity 300 pounds and includes two separate compartments. The forward compartment is nearly 8 feet (2.4 m) long and the aft compartment 4 feet (1.2 m) long. This modification is performed without any loss of performance according to Raisbeck Engineering.

Operators

Civilian

  • Delta Private Jets
    Charter business jet company wholly owned by Delta Air Lines operating Learjet 60 aircraft.
  • ExecuJet Aviation Group
    Worldwide business jet management and charter company operating Learjet 60 and 60XR aircraft.
  • FlexJet
    Fractional business jet company wholly owned by Bombardier Aerospace operating fifteen Learjet 60 and 60XR aircraft.
  • VistaJet
    Worldwide business jet charter company operating Learjet 60XR aircraft.
  • Image Air Charter
    Canadian business class aircraft management and charter company, operating the Lear 60, Citation III and VII, Challenger 601 and 605, Hawker 800 and 850 aircraft and many more types.
  • Hop-A-Jet Worldwide Jet Charter
    Private business jet charter company operating Learjet 60 (4), Learjet 55 (2), Learjet 35 (2), Learjet 45 (2) and Challenger 604 (3) aircraft.
  • Elite Air
    Private aircraft charter corporation operating not only the Learjet 60XR, but also the Global 5000, Challenger 604, Challenger 300, Learjet 40XR, Learjet 31A, Embraer Legacy 600, Beechjet 400 and the Premier IA.

Government

  • Macedonia
    One Learjet 60 delivered in April 2005 to replace the lost King Air 200. Used by the Government for VIP transport.
  • Mexico
    One Learjet 60 delivered for the Mexican Navy.
  • United States of America
    Operates six Learjet 60 aircraft under the Federal Aviation Administration performing airborne accuracy checks of navigational facilities.
  • Argentina
    One Learjet 60XR (LV-CKA) used by Tucumán Government.

Incidents and accidents

On September 19, 2008, a Learjet 60 crashed while taking off from Columbia Metropolitan Airport in Columbia, South Carolina. Performers Travis Barker and DJ AM were injured, while four others were killed in the crash. According to the Federal Aviation Administration, as the plane was departing the airport, air traffic controllers saw sparks emanating from the plane, which went off the runway, smashed through a fence, crossed a nearby road, slammed into an embankment and caught fire.

After the post accident investigation the Federal Aviation Administration issued new directives for operators of the Learjet 60 and 60XR aircraft to check tire pressures every four days. This is due to the Learjet 60 models having experienced "more than twice the number of tire failure events" than the Learjet model 30 series, and generally have greater "vulnerability to damage due to a burst tire" than other types of business jets.

Specifications

General characteristics
Crew: 2
Capacity: 10 passengers
Length: 58 ft 8 in (17.88 m)
Wingspan: 43 ft 9 in (13.34 m)
Height: 14 ft 8 in (4.47 m)
Wing area: 264.5 ft² (24.57 m²)
Empty weight: 14,640 lb (6,641 kg)
Max takeoff weight: 23,500 lb (10,660 kg)
Powerplant: 2 × Pratt & Whitney Canada PW305A turbofan, 4,600 lbf (20.46 kN) each

Performance
Maximum speed: 522 mph (453 knots, 839 km/h) (max cruise)
Cruise speed: 484 mph (Fast Cruise 536 mph) (420 knots, 778 km/h, Mach 0.74) (long-range cruise)
Range: 2,773 mi (2,409 nmi, 4,461 km)
Service ceiling: 51,000 ft (15,545 m)
Rate of climb: 4,500 ft/min (22.9 m/s)

Last updated September 24, 2011
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Learjet 60".
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