Continental IO-520

The Continental IO-520 is a six-cylinder, horizontally opposed aircraft engine produced by Teledyne Continental Motors. First run in 1963 as a development of the IO-346, it has been produced in versions incorporating fuel injection, turbo-charging, and gearing.

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 and Baron, and Cessna 185- 206-, 210-, 310-, and 400-series aircraft. The IO-520 remained in production in 2019.
The geared GTSIO-520's most common applications are the twin-engine Cessna 404 and 421, where it is rated at. The 'G' prefix indicated the incorporation of propeller reduction gearing.

Variants

IO-520

;IO-520-A: 285 hp
;IO-520-B: 285 hp
;IO-520-BA: 285 hp
;IO-520-BB: 285 hp
;IO-520-C: 285 hp
;IO-520-CB: 285 hp
;IO-520-D: 300 hp
;IO-520-E: 300 hp
;IO-520-F: 300 hp
;IO-520-J: 285 hp
;IO-520-K: 300 hp
;IO-520-L: 300 hp
;IO-520-M: 285 hp
;IO-520-MB: 285 hp
;IO-520-N: 300 hp
;IO-520-NB: 300 hp
;L/IO-520-P:

TSIO-520

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

GTSIO-520

;GTSIO-520-C:
;GTSIO-520-D: 375 hp
;GTSIO-520-F:
;GTSIO-520-H: 375 hp
;GTSIO-520-K:
;GTSIO-520-L: 375 hp
;GTSIO-520-M: 375 hp
;GTSIO-520-N: 375 hp
;GTSIO-520-S: 375 hp