Cessna Citation Longitude

Model 700 Citation Longitude[1]
Role	Corporate Jet
National origin	United States
Manufacturer	Textron Aviation
First flight	October 8, 2016[2]
Introduction	expected late third or early fourth quarter 2018[3]
Status	In production
Produced	March 2017 - present
Unit cost	US$27 million[4]
Developed from	Cessna Citation Latitude
Developed into	Cessna Citation Hemisphere

The Cessna Citation Longitude (Model 700) is a 3,500 nmi (6,500 km) range business jet, part of the Cessna Citation family. Announced at the May 2012 EBACE, it made its first flight on October 8, 2016, certification is expected in the third quarter of 2018 with deliveries later in the same year. Powered by Honeywell HTF7000 turbofans, The aluminum airframe has the fuselage cross-section of the Citation Latitude, stretched by a seat row, with a new ~28° swept wing and a T-tail.

Design

The project is perceived as the follow-on development to the now-canceled Cessna Citation Columbus. Its fuselage cross-section (83.25 inch circular section) is the same as the Cessna Citation Latitude. The aircraft has a T-tail empennage and area rule fuselage contouring. The aluminum wings incorporate moderate winglets. Construction is aluminum for both wing and fuselage. The cabin is 7 inches shorter and 6 inches narrower than the Columbus design.^[5]

Initially, the Snecma Silvercrest engine was selected to power the aircraft,^[6] however the production model is powered by Honeywell HTF7000 turbofans.^[7] The Silvercrest will be used for the larger Citation Hemisphere.

Its wings and empennage are similar to the Hawker 4000 with winglets leading to a 5.3 ft. larger wingspan. The moderately super-critical wing have a quarter-chord sweep of 26.8° for its inner section and 28.6° for the outer section. The six-passenger Latitude fuselage has been reinforced and stretched by another row of seats to accommodate eight people in double club. The manufacturer has not announced the final design weights (as of May 2016); BCA estimates a 24,000–25,000 lb. basic operating weight. Cabin height is 6.0 ft., width is 6 ft. 5 in., floor width is 4 ft. 1 in and cabin length is 25 ft.^[8]

Development

Model shown at the May 2018 EBACE

Announced at the May 2012 EBACE and scheduled for introduction in 2017.^[9] The first flight-test aircraft completed its first flight on October 8, 2016.^[2] The second flew in November, and in March 2017 the third, used to develop avionics and systems and to collect flight simulator data before two others will join the test program. The two aircraft completed 125 flights for more than 250 hours as production of the aircraft commenced at Textron Aviation's Wichita, Kansas facility.^[10]

Less than eight months after the first flight and after more than 200 missions for nearly 400 hours, on track for certification later in 2017, the fourth prototype joined the flight-test program on May 6, fully outfitted for interior, environmental control system, pressurization and cabin technologies evaluation.^[11] The first production unit was rolled out on June 13, 2017 as the four test aircraft have flown 550 hours and a fifth aircraft will join in summer 2017.^[12] In October 2017, test aircraft have completed more than 1,200 flight hours over 600 flights, for a certification expected by the end of 2017 or in early 2018.^[13]

In February 2018, as the five aircraft accumulated over 1,000 flights and 2,000 hours, US approval and customer deliveries were expected before the end of the second quarter before European validation six months later.^[4] After 3,000 hours on five aircraft, flight testing will conclude by early June 2018, and 200,000 pages of documentation will be completed after a month.^[14] As testing has doubled for certification, expanding related documentation, it is expected in the third quarter of 2018 with deliveries from late in this quarter or early in the fourth, less than a year after originally planned.^[3] It received a partial exemption for fuel tank flammability requirements applicable through January 2020 to keep its third-quarter approval goal, but a compliance plan have to be submitted by October 1.^[15]

Specifications

Data from "Citation Longitude Specifications". Textron Aviation.

General characteristics

• Crew: 2+1 optional crew member
• Capacity: 8-12
• Length: 73 ft 2 in (22.30 m)
• Wingspan: 67 ft 0 in (20.42 m)
• Height: 19 ft 5 in (5.92 m)
• Wing area: 537 sq ft (49.9 m²)
• Airfoil: 28.6° Wing Sweep
• Max takeoff weight: 39,500 lb (17,917 kg)
• Full Fuel Payload: 1,600 lb (730 kg)
• Cabin Height: 72 in (1.83 m)
• Cabin Width: 77 in (1.96 m)
• Cabin Length: 25 ft 2 in (7.67 m)
• Powerplant: 2 × Honeywell HTF7700L turbofans, 7,550 lbf (33.6 kN) thrust each

Performance

• Cruise speed: 476 kn (548 mph; 882 km/h)
• Range: 3,500 nmi (4,028 mi; 6,482 km)
• Service ceiling: 45,000 ft (14,000 m)
• Time to altitude: 16mn to FL430 for 33,000 lb (14,970 kg) at takeoff^[16]
• Takeoff: 4,900 ft (1,494 m)
• Landing: 3,400 ft (1,036 m)
• Cabin altitude: 5,950 ft (1,810 m)
• Fuel consumption: 2,400 lb (1,100 kg) for the first hour, 1,600–1,800 lb (730–820 kg) per hour in cruise.^[16]

Avionics

• Garmin G5000 flight deck

See also

Related development

• Cessna Citation series
• Cessna Citation Columbus
• Cessna Citation Latitude
• Cessna Citation Hemisphere

Aircraft of comparable role, configuration and era

• Gulfstream G280
• Bombardier Challenger 350
• Embraer Legacy 600
• Embraer Legacy 500
• Dassault Falcon 2000S

References

External links

Wikimedia Commons has media related to Cessna Citation Longitude.

• "Cessna Citation Latitude". Textron Aviation/Cessna.
• "Cessna Citation Longitude unveiled". Flying. May 14, 2012.
• Huber, Mark (May 14, 2012). "Cessna Launches Longitude Jet". AINonline.