Cessna 340#Specifications (340A)

The 340 was conceived as a cabin-class development of the successful Cessna 310.

The 340 is a six-seat aircraft, with four passenger seats, an aisle and an airstair door. The tail and landing gear were based on the Cessna 310's units, while its wings were from the Cessna 414. The 340's primary selling feature was its spacious, pressurized cabin, the first in a light twin.

Work on the 340 began in 1969, and the first aircraft was delivered in 1971, behind schedule due to a prototype crashing during flight testing in 1970.

The early models have two turbocharged Continental TSIO-520-K engines with 285 hp (214 kW) each. Starting in 1976, the engines were upgraded to the more powerful Continental TSIO-520-NB engines of 310 hp (233 kW). This variant is known as the 340A and it also features smaller {{convert|75.5|in|mm|adj=on}} diameter propellers to reduce noise and meet ICAO Annex 16 noise requirements.{{cite web |last= |date=October 19, 2018 |title=Type Certificate Data Sheet No. 3A25 |url=https://rgl.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/dd3c5f3279413dce86258331005845f0/$FILE/3A25_Rev_27.pdf |access-date=2022-08-19 |publisher=Federal Aviation Administration}}

The Cessna 335 was marketed as a low-priced, non-pressurized, version powered by 300 hp (225 kW) Continental TSIO-520-EB engines. The prototype 335 made its maiden flight on December 5, 1978, with the first production aircraft flying in 1979.Taylor 1980, pp. 318–319. It was not a market success, with only 64 built by the time production ended in 1980. The 340 was more successful and remained in production until 1984 with 1287 built.

;340

:Pressurized six-seat twin powered by two Continental TSIO-520-K engines of {{cvt|285|hp}} each. Certified 15 October 1971. 350 built.Simpson 1991, p.108

;340A

:Pressurized six-seat twin powered by two Continental TSIO-520-NB engines of {{cvt|310|hp}} each. Certified 19 November 1975 948 built.

;335

:Unpressurized six-seat twin powered by Continental TSIO-520-EB engines of {{cvt|300|hp}} each. Certified 2 October 1979 65 built.Simpson 1991, p. 107

;Riley Rocket 340

:Conversion of Cessna 340 aircraft by fitting two {{cvt|340|hp}}) Lycoming TIO-540-R engines. Also designated R340L.Taylor 1982, p. 454.

;Riley Super 340

:Conversion of 1972–1975 Cessna 340 aircraft by fitting two {{cvt|310|hp}} Continental TSIO-520-J/-N engines. Also known as R340 Super.Taylor 1988, pp. 461–462.

{{Aircraft specs

|ref=Jane's All The World's Aircraft 1980–81

|prime units?=kts

|genhide=

|crew= one pilot

|capacity= five passengers

|length m=

|length ft=34

|length in=4

|span m=

|span ft=38

|span in=1

|height m=

|height ft=12

|height in=7

|wing area sqm=

|wing area sqft=184

|airfoil=NACA 23018 (root) NACA 23009 (tip)

|aspect ratio=7.2:1

|empty weight kg=

|empty weight lb=3911

|gross weight kg=

|max takeoff weight lb=5990

|fuel capacity={{convert|203|USgal|impgal L|abbr=on}} (usable capacity)

|eng1 number=2

|eng1 name=Continental TSIO-520-NB

|eng1 type=air-cooled flat-six engines

|eng1 kw=

|eng1 hp=310

|prop blade number=3

|prop name=McCauley constant-speed propeller

|prop dia m=

|prop dia ft=6

|prop dia in=4+1/2

|prop dia sigfig=3

|perfhide=

|max speed kmh=

|max speed mph=

|max speed kts=244

|max speed note=at {{convert|20000|ft|m|abbr=on}}

|cruise speed kmh=

|cruise speed mph=

|cruise speed kts=172

|cruise speed note=at {{convert|25000|ft|m|abbr=on}} (econ. cruise)

|stall speed kts=71

|stall speed note= (flaps down, power off) CAS

|range km=

|range miles=

|range nmi=1405

|range note=at {{convert|10000|ft|m|abbr=on}} (econ. cruise)

|ceiling m=

|ceiling ft=29800

|climb rate ms=

|climb rate ftmin=1650

|climb rate note=at sea level

|more performance=*Takeoff run to 50 ft (15 m): {{convert|2175|ft|m|abbr=on}}

• Landing run from 50 ft (15 m): {{convert|1850|ft|m|abbr=on}}

|avionics=

}}

{{aircontent|

|related=

|similar aircraft=

• Beechcraft Duke
• Piper PA-31 Navajo
• Rockwell Aero Commander

|sequence=

|lists=

|see also=

}}

{{Reflist|30em}}

• R.W.Simpson, Airlife's General Aviation, Airlife Publishing, England, 1991, {{ISBN|978-1-85310-194-6}}
• Taylor, John W. R. Jane's All The World's Aircraft 1980–81. London: Jane's Publishing Company, 1980. {{ISBN|0-7106-0705-9}}.
• Taylor, John W. R. Jane's All The World's Aircraft 1982–83. London: Jane's Yearbooks, 1982. {{ISBN|0-7106-0748-2}}.
• Taylor, John W. R. Jane's All The World's Aircraft 1988–89. Coulsdon, UK: Jane's Defence Data, 1988. {{ISBN|0-7106-0867-5}}.

{{commons category|Cessna 340}}

• [https://web.archive.org/web/20130508225810/http://www.cessna.com/why-cessna/our-history Official website Cessna history]

{{Cessna 310 family}}

{{Cessna}}

340

Category:1970s United States civil utility aircraft

Category:Low-wing aircraft

Category:Aircraft first flown in 1970

Category:Twin piston-engined tractor aircraft