The Continental IO-520 is a six-cylinder, horizontally opposed aircraft engine produced by

Teledyne Continental Motors Continental Aerospace Technologies is an aircraft engine manufacturer located at the Brookley Aeroplex in Mobile, Alabama, United States. It was originally spun off from automobile engine manufacturer Continental Motors Company in 1929 and ow ...

. First run in 1963 as a development of the IO-346, it has been produced in versions incorporating

fuel injection Fuel injection is the introduction of fuel in an internal combustion engine, most commonly automotive engines, by the means of a fuel injector. This article focuses on fuel injection in reciprocating piston and Wankel rotary engines. All c ...

(IO-520), turbo-charging (TSIO-520), and gearing (GTSIO-520).

Design and development

The IO-520 series engines normally produce and are used in numerous aircraft such as certain models of the Bellanca Viking 300 and Super Viking, the

Beech Bonanza The Beechcraft Bonanza is an American general aviation aircraft introduced in 1947 by Beech Aircraft Corporation of Wichita, Kansas. The six-seater, single-engined aircraft is still produced by Beechcraft and has been in continuous productio ...

and

Baron Baron is a rank of nobility or title of honour, often Hereditary title, hereditary, in various European countries, either current or historical. The female equivalent is baroness. Typically, the title denotes an aristocrat who ranks higher than ...

, and

Cessna Cessna () is an American brand of general aviation aircraft owned by Textron Aviation since 2014, headquartered in Wichita, Kansas. Originally, it was a brand of the Cessna Aircraft Company, an American general aviation aircraft manufactu ...

185 Year 185 ( CLXXXV) was a common year starting on Friday of the Julian calendar. At the time, it was known as the Year of the Consulship of Lascivius and Atilius (or, less frequently, year 938 ''Ab urbe condita''). The denomination 185 for this ...

206 Year 206 ( CCVI) was a common year starting on Wednesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Umbrius and Gavius (or, less frequently, year 959 ''Ab urbe condita''). The denomination 206 for this y ...

210 Year 210 ( CCX) was a common year starting on Monday of the Julian calendar. At the time, it was known as the Year of the Consulship of Faustinus and Rufinus (or, less frequently, year 963 ''Ab urbe condita''). The denomination 210 for this y ...

310 __NOTOC__ Year 310 ( CCCX) was a common year starting on Sunday of the Julian calendar. At the time, it was known as the Year of the Consulship of Andronicus and Probus (or, less frequently, year 1063 ''Ab urbe condita''). The denomination 310 ...

-, and

400 __NOTOC__ Year 400 (Roman numerals, CD) was a leap year starting on Sunday of the Julian calendar. In the Roman Empire, it was known as the Year of the Consulship of Stilicho and Aurelianus (consul 400), Aurelianus (or, less frequently, year ...

-series aircraft. The IO-520 remained in production in 2019. The geared GTSIO-520's most common applications are the twin-engine

Cessna 404 The Cessna 404 Titan is an American twin-engined, light aircraft built by Cessna, Cessna Aircraft. It was the company's largest twin piston-engined aircraft at the time of its development in the 1970s. Its US military designation is C-28, and ...

and

421 __NOTOC__ Year 421 ( CDXXI) was a common year starting on Saturday of the Julian calendar. At the time, it was known as the Year of the Consulship of Agricola and Eustathius (or, less frequently, year 1174 ''Ab urbe condita''). The denominat ...

, where it is rated at . The 'G' prefix indicated the incorporation of propeller reduction gearing.

Variants

IO-520

;IO-520-A: 285 hp (213 kW) (Meyers 200) ;IO-520-B: 285 hp (213 kW) (Beech 35-C33A Debonair, s35, model 36 Bonanza) ;IO-520-BA: 285 hp (213 kW) ;IO-520-BB: 285 hp (213 kW) ;IO-520-C: 285 hp (213 kW) ;IO-520-CB: 285 hp (213 kW) ;IO-520-D: 300 hp (224 kW) ;IO-520-E: 300 hp (224 kW) ;IO-520-F: 300 hp (224 kW) ;IO-520-J: 285 hp (213 kW) ;IO-520-K: 300 hp (224 kW) (Bellanca Viking) ;IO-520-L: 300 hp (224 kW) ;IO-520-M: 285 hp (213 kW) ;IO-520-MB: 285 hp (213 kW) ;IO-520-N: 300 hp (224 kW) ;IO-520-NB: 300 hp (224 kW) ;L/IO-520-P:

TSIO-520

;TSIO-520-A: ;TSIO-520-AE: ;LTSIO-520-AE: ;TSIO-520-AF: ;TSIO-520-B: 285 hp (213 kW) ;TSIO-520-BB: 285 hp (213 kW) ;TSIO-520-BE: ;TSIO-520-C: ;TSIO-520-CE: ;TSIO-520-D: 285 hp (213 kW) ;TSIO-520-DB: 285 hp (213 kW) ;TSIO-520-E: ;TSIO-520-EB: ;TSIO-520-G: 285 hp (213 kW) ;TSIO-520-H: ;TSIO-520-J: 310 hp (230 kW) ;TSIO-520-JB: 310 hp (230 kW) ;TSIO-520-K: 285 hp (213 kW) ;TSIO-520-KB: 285 hp (213 kW) ;TSIO-520-L: 310 hp (230 kW) ;TSIO-520-LB: 310 hp (230 kW) ;TSIO-520-M: 285 hp (213 kW) ;TSIO-520-N: 310 hp (230 kW) ;TSIO-520-NB: 310 hp (230 kW) ;TSIO-520-P: 310 hp (230 kW) ;TSIO-520-R: 310 hp (230 kW) ;TSIO-520-T: 310 hp (230 kW) ;TSIO-520-U: ;TSIO-520-UB: ;TSIO-520-VB: ;TSIO-520-WB:

GTSIO-520

;GTSIO-520-C: ;GTSIO-520-D: 375 hp (280 kW) (Cessna 421) ;GTSIO-520-F: ;GTSIO-520-H: 375 hp (280 kW) (Cessna 421B) ;GTSIO-520-K: ;GTSIO-520-L: 375 hp (280 kW) (Cessna 421C) ;GTSIO-520-M: 375 hp (280 kW) (Cessna 404) ;GTSIO-520-N: 375 hp (280 kW) (Cessna 421C) ;GTSIO-520-S: 375 hp (280 kW) (

Tecnam P2012 Traveller The Tecnam P2012 Traveller is a twin-engine, high-wing utility aircraft designed and manufactured by the Italian company Costruzioni Aeronautiche Tecnam, based in Capua, Italy, near Naples. Certified under EASA CS-23 and FAA FAR Part 23, t ...

Design and development

Variants

IO-520

TSIO-520

GTSIO-520

Applications

Specifications (GTSIO-520-D)

See also

References

External links