Lycoming O-540 Engine

Lycoming · piston · 3,332 engine-system SDR reports · 8 ADs

235–350 hpPower
1957First Run
In productionStatus
Six-cylinder: PA-32, C182 RG, aerobatic (AEIO).Note

Reported engine systems (FAA SDR)

  • Reciprocating Engine1,314 (39.4%)
  • Ignition694 (20.8%)
  • Engine Fuel & Control469 (14.1%)
  • Other201 (6%)
  • Engine Exhaust141 (4.2%)
  • Starting140 (4.2%)
  • Engine Indicating115 (3.5%)
  • Power Plant85 (2.6%)
  • Engine Oil79 (2.4%)
  • Engine Controls52 (1.6%)
  • Engine - Turbine/Turboprop32 (1%)
  • Engine Air6 (0.2%)
  • Other4 (0.1%)

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

Airworthiness directives

  • 2022-16371: Airworthiness Directives; Continental Aerospace Technologies, Inc., Lycoming Engines, and Textron Lycoming/Subsidiary of Textron, Inc. Reciprocating Engines (2022-07-29)
  • 2017-12075: Airworthiness Directives; Lycoming Engines Reciprocating Engines (2017-06-13)
  • 2015-12651: Airworthiness Directives; Lycoming Engines Reciprocating Engines (Type Certificate Previously Held by Textron Lycoming Division, AVCO Corporation) (2015-05-28)
  • 2013-25342: Airworthiness Directives; Lycoming Engines and Continental Motors, Inc. Reciprocating Engines (2013-10-29)
  • 2013-00525: Airworthiness Directives; Lycoming Engines and Continental Motors, Inc. Reciprocating Engines (2013-01-14)
  • 2012-22924: Airworthiness Directives; Lycoming Engines Reciprocating Engines (2012-09-19)
  • 2012-1130: Airworthiness Directives; Lycoming Engines Reciprocating Engines (2012-02-02)
  • US-2011-13-03: Hartzell Engine Technologies, LLC (HET) Turbochargers - Inspection / Cleaning (2011-06-30)

Occurrences naming this engine

353 occurrences, 27 fatal, 45 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.