Continental IO-520 Engine

Continental Aerospace · piston · 3,362 engine-system SDR reports · 12 ADs

285–310 hpPower
1963First Run
In productionStatus
Bonanza, C210, Baron.Note

Reported engine systems (FAA SDR)

  • Reciprocating Engine2,305 (68.6%)
  • Ignition326 (9.7%)
  • Engine Fuel & Control225 (6.7%)
  • Other101 (3%)
  • Starting88 (2.6%)
  • Power Plant79 (2.3%)
  • Engine Exhaust76 (2.3%)
  • Engine Controls57 (1.7%)
  • Engine Oil49 (1.5%)
  • Engine - Turbine/Turboprop31 (0.9%)
  • Engine Indicating22 (0.7%)
  • Other2 (0.1%)
  • Engine Air1 (0%)

Report counts reflect fleet size and reporting activity, not relative safety or reliability. Source: FAA Service Difficulty Reporting System (public domain).

Airworthiness directives

  • 2023-20445: Airworthiness Directives; Continental Aerospace Technologies, Inc. Engines (2023-09-21)
  • 2023-05339: Airworthiness Directives; Continental Aerospace Technologies, Inc., Reciprocating Engines (2023-03-15)
  • 2023-03796: Airworthiness Directives; Continental Aerospace Technologies, Inc. Reciprocating Engines (2023-02-23)
  • 2023-02152: Airworthiness Directives; Continental Aerospace Technologies, Inc. Reciprocating Engines With a Certain Superior Air Parts, Inc. Intake Valve Installed (2023-02-02)
  • 2022-16371: Airworthiness Directives; Continental Aerospace Technologies, Inc., Lycoming Engines, and Textron Lycoming/Subsidiary of Textron, Inc. Reciprocating Engines (2022-07-29)
  • 2022-03640: Airworthiness Directives; Continental Aerospace Technologies, Inc. and Continental Motors Reciprocating Engines (2022-02-22)
  • 2020-17874: Airworthiness Directives; Continental Aerospace Technologies, Inc. (Type Certificate Previously Held by Continental Motors, Inc.) Reciprocating Engines (2020-08-17)
  • 2014-06198: Airworthiness Directives; Continental Motors, Inc. Reciprocating Engines With Superior Air Parts, Inc. (SAP) Cylinder Assemblies Installed (2014-03-21)
  • US-2012-10-52: [Final Rule] Hartzell Engine Technologies, LLC (HET) Turbochargers - Removal (2012-06-12)
  • 2012-12612: Airworthiness Directives; Continental Motors, Inc. (CMI) Reciprocating Engines (2012-05-24)
  • 2011-31794: Airworthiness Directives; Continental Motors, Inc. (CMI) Reciprocating Engines (2011-12-13)
  • US-2010-11-04: Hydraulic Valve Lifters - Identification / Replacement (2010-06-02)

Occurrences naming this engine

100 occurrences, 10 fatal, 21 fatalities.

Engine-failure occurrences on aircraft using this engine

0 occurrences, 0 fatal, 0 fatalities.

These occurrences are engine-failure events on aircraft families that can be fitted with this engine; the engine type of each specific aircraft is not confirmed. Do not read this list as a record for this engine.