Cessna Citation I

File:Van der Stoel stapt in vliegtuig - NL-HaNA 2.24.01.05 0 927-6710 WM256 (cropped).jpg boarding in 1975]]

In the early 1960s, the three major American general aviation aircraft manufacturers—Beechcraft, Cessna and Piper–faced a competitive challenge in the form of two newly-developed light business jets, the Learjet 23 and the Aero Commander 1121 Jet Commander, which were much less expensive to buy and operate than previous business jets such as the North American Sabreliner and Hawker Siddeley HS.125.{{sfn|Szurovy|1999|p=11}} Previous efforts by Beechcraft and Cessna to market small jets had not met with success: the Cessna 407, a proposed civil version of the T-37 Tweet jet trainer, had not proceeded past the mockup stage due to insufficient customer interest,{{cite web |url=https://www.aopa.org/news-and-media/all-news/2006/may/pilot/turbine-pilot-(4) |title=Turbine Pilot: VLJ Deja Vu |last=Olcott |first=John W. |date=5 May 2006 |website=aopa.org |publisher=Aircraft Owners and Pilots Association |access-date=17 April 2020}} while an effort by Beechcraft to market the Morane-Saulnier MS.760 Paris in North America had ended with only two aircraft sold.{{cite magazine |last=Jerram |first=Mike |date=October 2010 |title=Morane-Saulnier Paris: the very first Very Light Jet |url=http://www.iaopa.eu/mediaServlet/storage/gamag/oct10/p42-45.pdf |magazine=General Aviation |publisher=International Council of Aircraft Owners and Pilots Associations |access-date=17 April 2020 }} However, the runaway success of the Learjet caused the two companies—which only manufactured piston engined aircraft at the time—to reconsider turbine engined aircraft, and Beechcraft launched two simultaneous efforts: the development of the turboprop-powered King Air 90 and an agreement to market the HS.125 in North America.{{sfn|Szurovy|1999|p=12}}

Cessna quickly found that its premium twin piston-engine aircraft were uncompetitive with the King Air, which was substantially faster, yet could be flown by pilots with similar skills and licensing qualifications. However, the company also saw a broad gap between the King Air and existing light jets such as the Learjet, which were far faster but also relatively unforgiving to fly, requiring highly skilled pilots and long runways. Cessna reasoned that a market existed for a light jet that was faster than the King Air but similarly easy to fly, relatively inexpensive to buy and maintain, and able to access small airports with shorter runways. This type of aircraft would appeal to traditional Cessna buyers: amateur owner-pilots who intend to fly the aircraft themselves.{{sfn|Szurovy|1999|p=12–14}}{{Citation needed|date=December 2024}}

In October 1968 Cessna announced an eight place business jet capable of operating from airfields accessible to light twins.

The Fanjet 500 prototype first flew on September 15, 1969.

By then its unit cost was $695,000, ${{inflation|USD|.695|1969|r=2}}M today.

The renamed 500 Citation had a relatively long development program with a longer forward fuselage, repositioned engine nacelles, a larger tail and more dihedral to the horizontal tail.

It was FAA certified on September 9, 1971.{{cite web |url= http://www.airliners.net/aircraft-data/cessna-500-501-citation-citation-i-citation-isp/157 |title= Cessna 500 & 501 Citation, Citation I & Citation I/SP |work= The International Directory of Civil Aircraft |author= Gerard Frawley |via= Airliners.net}}

In 1974, thrust reversers became optional, and in 1976, the gross weight was increased by {{convert|1,000|lb}} to {{convert|10,850|lb}}.{{sfn|Szurovy|1999|p=25}} In early 1976, the wingspan was increased from {{cvt|{{#expr:43+11/12round1}}|to|{{#expr:47+1/12round1}}|ft}}.Taylor, J.W.R. (editor) Jane's All the World's Aircraft 1976-77. London: Macdonald and Jane's, 1976. {{ISBN|0-354-00538-3}}, p.275.

The enhanced 500 Citation I was introduced later in 1976 with the higher gross weight, improved JT15D-1A engines and the increased span wing. Speed and range were enhanced, the aircraft's service ceiling increased from {{convert|35,000|to|41,000|ft}}, and the cabin pressure at altitude was increased from {{convert|7.6|to|8.6|psi|abbr=on}}.{{sfn|Szurovy|1999|p=25}} Many of the original Citations, of which 349 were produced, were upgraded with the new engines.{{sfn|Szurovy|1999|p=26}}

The 501 Citation I/SP, certificated for single pilot operations, was delivered in early 1977.

Production ended in 1985, it was developed into the Citation II/Bravo and the Citation V/Ultra/Encore.

395 Citations and Citation Is and 296 I/SPs were built between 1971 and 1985.{{cite book| title=Airlife's General Aviation| publisher=Airlife Publishing | location=Shrewsbury, England | first=R.W.| last=Simpson| year=1991 | isbn=1-85310-194-X|page=111}} The aircraft were dropped from production because JT15D engine prices had increased to the point that the price difference between the Citation I and Citation II series had become minimal, causing most buyers to opt for the larger and faster II and II/SP.{{sfn|Szurovy|1999|p=28}}

By 2018, used 1970s model 500s were valued at $300,000, Citation ISPs at $695,000 to $1.25 million with the Eagle II package.{{cite magazine |url= https://www.ainonline.com/sites/default/files/full-issues/ain_1218.pdf |title= For many models, market hitting the apex |magazine= Aviation International News |author= Mark Huber |date= December 2018 |pages= 20–21, 24 |access-date= 2018-12-27 |archive-url= https://web.archive.org/web/20181227181555/https://www.ainonline.com/sites/default/files/full-issues/ain_1218.pdf |archive-date= 2018-12-27 |url-status= dead }}

File:OH-CIT (5696640971) (2) (cropped).jpg and two aft JT15D turbofans.]]

The aircraft was powered by two Pratt & Whitney Canada JT15D-1 turbofan engines after Cessna's experience with the T-37 Tweet twinjet trainer.

Its use of turbofans rather than turbojets and straight wings rather than swept wings made it cruise slowly compared to other business jets and Learjet salesmen mocked it as the "Nearjet" vulnerable to "bird strikes from the rear"; Cessna renamed it the "Citation" after the thoroughbred but it was nicknamed as "Slowtation".{{cite news |url= http://aviationweek.com/business-aviation/can-cessna-succeed-g450 |title= Can A Cessna Succeed The G450? |date= Feb 10, 2017 |author= William Garvey |work= Aviation Week & Space Technology}}

;{{ANG}}

• National Air Force of Angola{{cite web|title=Angola receives maritime surveillance aircraft from Israel|url=http://www.defenceweb.co.za/index.php?option=com_content&view=article&id=49594:african-country-receives-maritime-surveillance-aircraft-from-israel&catid=35:Aerospace&Itemid=107|website=Defence Web|access-date=19 October 2017|archive-url=https://archive.today/20171019154529/http://www.defenceweb.co.za/index.php?option=com_content&view=article&id=49594:african-country-receives-maritime-surveillance-aircraft-from-israel&catid=35:Aerospace&Itemid=107|archive-date=19 October 2017|date=16 October 2017|url-status=dead}}{{cite magazine|last=Martin|first=Guy|title=Angola acquires Citation MPA|magazine=Air International|date=December 2017|volume=93|issue=6|page=11|issn=0306-5634}}{{cite web|url=http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?omni=Home-N-Number&nNumberTxt=54FT|title=FAA Registry: N-Number Inquiry Results: N54FT|publisher=Federal Aviation Authority|access-date=27 November 2017|archive-date=1 December 2017|archive-url=https://web.archive.org/web/20171201043836/http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?omni=Home-N-Number&nNumberTxt=54FT|url-status=dead}}

;{{ARG}}

• Argentine Army
• Argentine Federal Police{{cite magazine |last=Rivas |first=Santiago |title=Fighting Criminals all over Argentina |magazine=Air International |date=September 2020 |volume=99 |issue=3 |pages=80–83 |issn=0306-5634}}

;{{PRC}}

• People's Liberation Army Air Force

;{{DOM}}

• Dominican Republic Air Force

;{{ECU}}

• Ecuadorian Navy

;{{MEX}}

• Mexican Air ForceFlores, Santiago A. "From Cavalry to Close Air Support". Air International. May 2001, Vol. 60, No. 5, {{issn|0306-5634}}, p. 301.

;{{VEN}}

• Venezuelan Air Force

Notable accidents and incidents involving the Citation 500, Citation I and Citation I/SP:

• On August 2, 1979, New York Yankees player Thurman Munson was killed when his Citation I/SP, aircraft registration number N15NY, crashed short of the runway during touch-and-go landing practice at Akron-Canton Airport; the crash and post-crash fire destroyed the aircraft while Munson's two passengers escaped with serious injuries. The National Transportation Safety Board (NTSB) attributed the accident to Munson's failure to lower the flaps and maintain adequate airspeed.{{cite web |url=https://app.ntsb.gov/pdfgenerator/ReportGeneratorFile.ashx?EventID=20041105X01764&AKey=1&RType=Final&IType=FA |title=NTSB Aviation Accident Final Report CHI79FA064 |publisher=National Transportation Safety Board |access-date=April 6, 2021}}
• On March 30, 2008, a Citation I/SP, registration VP-BGE, crashed near Biggin Hill Airport, killing former racing drivers David Leslie and Richard Lloyd, the two pilots, and another passenger, and causing a fire that destroyed two houses struck by the aircraft. The accident was attributed to the flight crew's improper emergency procedures in reaction to a perceived engine fault.{{cite news|url=http://news.sky.com/skynews/article/0,,30100-1311171,00.html |work=Sky News |title=Two Victims of Private Jet Crash Named |date=30 March 2008 |access-date=31 March 2008 |url-status=dead |archive-url=https://web.archive.org/web/20080516094700/http://news.sky.com/skynews/article/0%2C%2C30100-1311171%2C00.html |archive-date=16 May 2008 }}
• On October 13, 2016, a Citation 500, registration C-GTNG, crashed shortly after takeoff from Kelowna International Airport, killing former Premier of Alberta Jim Prentice, the pilot, and two other passengers. The Transportation Safety Board of Canada (TSB) was unable to conclusively determine the cause of the crash, but the flight profile was consistent with a spiral dive caused by spatial disorientation, and the pilot's lack of experience flying at night and in instrument meteorological conditions were thought to have contributed. The TSB also noted that although the aircraft had been outfitted for single-pilot operations in accordance with Transport Canada (TC) regulations, the operator lacked the required TC approval for single-pilot flights, and the TSB criticized TC for lax operator oversight.{{cite web|url=http://www.tsb.gc.ca/eng/rapports-reports/aviation/2016/a16p0186/a16p0186.asp |title=Aviation Investigation Report A16P0186 |publisher=Transportation Safety Board of Canada |date=June 4, 2019 |access-date=April 6, 2021}}
• On May 29, 2021, a Citation 501, registration N66BK, crashed into Percy Priest Lake shortly after takeoff from Smyrna Airport, killing American author Gwen Shamblin Lara and her husband, American actor Joe Lara, along with five other leaders of the Remnant Fellowship Church. The NTSB investigation determined the cause of the accident was pilot error related to somatogravic illusion (a type of spatial disorientation), due to heavy cloud cover.{{cite web|url=https://www.yahoo.com/news/ntsb-pilot-error-crash-killing-224248406.html |title=NTSB: Pilot error in crash killing diet guru Gwen Shamblin |publisher=AP |date=March 22, 2023 |access-date=March 23, 2023}}

{{Aircraft specs

|ref=Jane's Civil and Military Aircraft Upgrades 1994-95 {{cite book |editor-last=Michell |editor-first=Simon |title=Jane's Civil and Military Upgrades 1994-95 |year=1994 |location=Coulsdon, Surrey UK |publisher=Jane's Information Group |isbn=0-7106-1208-7 |pages=300–301}}

|prime units?=kts

|genhide=

|crew=Two (One pilot on I/SP)

|capacity=5 passengers

|length m=

|length ft=43

|length in=6

|span m=

|span ft=47

|span in=1

|height m=

|height ft=14

|height in=4

|wing area sqm=

|wing area sqft=278.5

|aspect ratio=7.83:1

|airfoil=

|empty weight kg=

|empty weight lb=6631

|gross weight kg=

|max takeoff weight lb=11850

|fuel capacity={{convert|564|USgal|impgal L|abbr=on}} usable fuel

|eng1 number=2

|eng1 name=Pratt & Whitney Canada JT15D-1B

|eng1 type=turbofans

|eng1 kn=

|eng1 lbf=2200

|perfhide=

|max speed kmh=

|max speed mph=

|max speed kts=

|max speed mach=0.705

|max speed note=(above {{convert|28000|ft|m|abbr=on}}

|cruise speed kmh=

|cruise speed mph=

|cruise speed kts=357

|cruise speed note=at {{convert|35000|ft|m|abbr=on}}

|stall speed kts=82

|stall speed note=(CAS)

|range km=

|range miles=

|range nmi=1328

|range note=at {{convert|41000|ft|m|abbr=on}} (45 min reserves, {{convert|1562|lb|kg|abbr=on}} payload)

|ceiling m=

|ceiling ft=41000

|climb rate ms=

|climb rate ftmin=2719

|more performance=

|avionics=

}}

{{Aircontent

|related=

• Cessna Citation series
• Cessna Citation II

|similar aircraft=

• Aérospatiale Corvette
• Dassault Falcon 10
• HFB 320 Hansa Jet
• Learjet 25

|lists=

|see also=

}}

{{Reflist}}

• {{cite book |last=Szurovy |first=Geza |date=1999 |title=Cessna Citation Jets |location=Osceola, Wisconsin |publisher=MBI Publishing Company |isbn=0-7603-0785-7}}

{{Commons and category}}

{{Citation family}}

{{Cessna}}

Category:1960s United States business aircraft

Citation I

Category:Twinjets

Category:Low-wing aircraft

Category:Cruciform tail aircraft

Citation 001

Category:Aircraft first flown in 1969

Category:Aircraft with retractable tricycle landing gear