Engines · piston (reciprocating) · data as of October 5, 2026

Lycoming IO-540-AB1A5

768 aircraft on the U.S. register carry a Lycoming IO-540-AB1A5 engine, rated at about 230 horsepower. The Cessna 182 Skylane is the model most often fitted with it (767 aircraft). The aircraft carrying it were built between 1998 and 2026.

The FAA records engines by code, usually at the level of a series ("O-320 series") rather than the exact variant; this page gathers every FAA code that reads as Lycoming IO-540-AB1A5. FAA spelling: IO-540-AB1A5.

Fitted to model families

Cessna 182 Skylane767Cessna T182 Turbo Skylane1

Cessna 182 Skylane · Cessna T182 Turbo Skylane

Where they are owner's state

Alabama205Texas71Florida56Virginia42Delaware41California27Kansas26North Carolina23Georgia23Michigan15

Kind of aircraft

Piston singles767 (100%)Turboprops1 (0.1%)

When the aircraft were built by decade

What the FAA has certified, ordered and been told about the Lycoming IO-540-AB1A5 the component layer

The design is held under 1 type certificate (1E4, held by Lycoming Engines). The FAA has issued 25 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 138 failure reports with the FAA since 1995, 36 of them in the last ten years.

FAA orders 25 airworthiness directives · newest first

2026-09-142026-17-10 · Reciprocating Engine Cylinder Section · engine

2026-04-082026-04-11 · Engine (Reciprocating) · engine

2024-12-052024-21-02 · Engine (Reciprocating) · engine

2017-08-152017-16-11 · Reciprocating Engine Power Section · engine

2015-11-032015-19-07 · Fuel injector fuel lines · engine

2012-10-242012-19-01 · Crankshafts · engine

All orders naming the Lycoming IO-540-AB1A5

Failure reports 138 since · what operators and shops told the FAA

Parts most often reported as the reports name them

Exhaust Valve20Pushrod20Magneto11Doubler7Alternator4Brushes3Gasket3Points3Skin3Valve Guide3

Latest reports

2026-02-10Doubler: cracked

2026-02-02Doubler: cracked

2025-12-02Doubler: cracked

2025-08-06Skin: cracked

2023-07-31Alternator: seized

Certificates and bulletins

1E4Type certificate held by Lycoming Engines · 81 models listed · revised February 28, 2018

Safety bulletins 6 · advice, not orders

2019-05-02NE-19-08 · Reciprocating Engine Cylinder Section - Lycoming Engines Parallel Valve Cylinders

2016-05-13NE-08-32R1 · Propeller Governor Idler Gear Shaft Set Screw

2014-03-24NE-14-13 · Reciprocating Engine - Cylinder Mounting Studs

2012-11-21NE-13-06 · Pushrod Shroud Spring Retainers, Engine Components Part No. AEL14995, for Lycoming Engines 320,...

2008-09-10NE-06-32R1 · Reciprocating Engine - Crankshaft

Sources: the FAA's type certificate data sheets, airworthiness directives, supplemental type certificates, special conditions and special airworthiness information bulletins (Dynamic Regulatory System), and the FAA's service difficulty reports. A failure report is what an operator or repair station chose to file; the counts show reporting as much as reliability, and larger and commercial fleets report more. How the systems are grouped.

Connections how this engine series links to the rest of the register

Fitted to

Cessna 182 Skylane 767 with this engine series
Cessna T182 Turbo Skylane 1 with this engine series

Where they are

Alabama 205 of these aircraft
Texas 71 of these aircraft
Florida 56 of these aircraft
Virginia 42 of these aircraft
Delaware 41 of these aircraft

Biggest operators

Civil Air Patrol 195 of these aircraft
Van Bortel Aircraft INC 19 of these aircraft
Textron Aviation INC 16 of these aircraft
National Aircraft Leasing CORP 12 of these aircraft
Textron Aviation Employees Flying Club INC 4 of these aircraft

Airworthiness

FAA orders naming the Lycoming IO-540-AB1A5 25 airworthiness directives
Failure reports on the Lycoming IO-540-AB1A5 138 reports since 1995

Analytics

These connections as data: /graph/engine/lycoming-io-540-ab1a5.json · about the eFlight graph.

Aircraft newest certificates first · 768

Tail no.	Maker and model	Group	Owner and base	Certificate	Registered	Status
N878CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2007-02-06	Valid
N880CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2007-02-06	Valid
N887CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2007-02-06	Valid
N894CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2007-02-06	Valid
N899CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2007-02-06	Valid
N157CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2006-12-20	Valid
N848CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2006-12-20	Valid
N849CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2006-12-20	Valid
N853CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2006-12-20	Valid
N864CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2006-12-20	Valid
N882CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2006-12-20	Valid
N893CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2006-12-20	Valid
N158CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2006-12-13	Valid
N159CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2006-12-04	Valid
N513MC	Cessna 182T	Fixed-wing, single engine	Individual owner Idaho	Standard	2006-11-17	Valid
N6019X	Cessna 182T	Fixed-wing, single engine	Individual owner Maine	Standard	2006-10-16	Valid
N972GJ	Cessna 182T	Fixed-wing, single engine	Polk County Sheriffs Office Winter Haven, Florida	Standard	2006-09-08	Valid
N154FC	Cessna 182T	Fixed-wing, single engine	Department of Agriculture and Consumer Services Tallahassee, Florida	Standard	2006-09-05	Valid
N207PB	Cessna 182T	Fixed-wing, single engine	Individual owner Maryland	Standard	2006-08-21	Valid
N741CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2006-08-09	Valid
N742CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Naxwell Afb, Alabama	Standard	2006-08-09	Valid
N743CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Naxwell Afb, Alabama	Standard	2006-08-09	Valid
N744CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2006-08-09	Valid
N745CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2006-08-09	Valid
N153FC	Cessna 182T	Fixed-wing, single engine	Department of Agriculture and Consumer Services Tallahassee, Florida	Standard	2006-08-07	Valid
N155FC	Cessna 182T	Fixed-wing, single engine	State of Florida Tallahassee, Florida	Standard	2006-08-02	Valid
N775CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2006-06-21	Valid
N776CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2006-06-21	Valid
N778CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2006-06-21	Valid
N780CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2006-06-21	Valid
N788CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2006-06-21	Valid
N771CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2006-06-20	Valid
N782CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2006-06-20	Valid
N783CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2006-06-20	Valid
N703CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Restricted	2006-01-25	Valid
N834CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Multiple	2004-04-08	Valid
N116D	Textron Aviation Inc 182T	Fixed-wing, single engine	Individual owner Michigan	Standard		Pending
N120HP	Cessna 182T	Fixed-wing, single engine	Individual owner Oklahoma	Standard		Pending
N1732A	Cessna 182T	Fixed-wing, single engine	Individual owner Tennessee	Standard		Pending
N19KH	Cessna 182T	Fixed-wing, single engine	Van Bortel Aircraft INC Arlington, Texas	Standard		Valid
N2002F	Textron Aviation Inc 182T	Fixed-wing, single engine	Textron Aviation INC Wichita, Kansas	Standard		Valid (manufacturer)
N2169M	Cessna 182T	Fixed-wing, single engine	Van Bortel Aircraft INC Arlington, Texas	Standard		Valid
N2460G	Cessna 182T	Fixed-wing, single engine	Van Bortel Aircraft INC Arlington, Texas	Standard		Valid
N271SL	Textron Aviation Inc 182T	Fixed-wing, single engine	Van Bortel Aircraft INC Arlington, Texas	Standard		Valid
N282AB	Cessna 182T	Fixed-wing, single engine	Van Bortel Aircraft INC Arlington, Texas	Standard		Valid
N386CP	Textron Aviation Inc 182T	Fixed-wing, single engine	Textron Aviation INC Wichita, Kansas	Standard		Valid (manufacturer)
N394CV	Textron Aviation Inc 182T	Fixed-wing, single engine	Bas Part Sales LLC Greeley, Colorado	Standard		Valid
N427CS	Textron Aviation Inc 182T	Fixed-wing, single engine	Van Bortel Aircraft INC Arlington, Texas	Standard		Valid
N438CP	Textron Aviation Inc 182T	Fixed-wing, single engine	Textron Aviation INC Wichita, Kansas	Standard		Valid (manufacturer)
N464F	Textron Aviation Inc 182T	Fixed-wing, single engine	Van Bortel Aircraft INC Arlington, Texas	Standard		Valid
N468CP	Textron Aviation Inc 182T	Fixed-wing, single engine	Textron Aviation INC Wichita, Kansas	Standard		Valid (manufacturer)
N519AM	Textron Aviation Inc 182T	Fixed-wing, single engine	Individual owner Pennsylvania	Standard		Pending
N520WB	Cessna 182T	Fixed-wing, single engine	Van Bortel Aircraft INC Arlington, Texas	Standard		Valid
N6005J	Textron Aviation Inc 182T	Fixed-wing, single engine	Textron Aviation INC Wichita, Kansas	Standard		Valid (manufacturer)
N6005S	Textron Aviation Inc 182T	Fixed-wing, single engine	Textron Aviation INC Wichita, Kansas	Standard		Valid (manufacturer)
N60809	Cessna 182T	Fixed-wing, single engine	Van Bortel Aircraft INC Arlington, Texas	Standard		Valid
N616CP	Textron Aviation Inc 182T	Fixed-wing, single engine	Textron Aviation INC Wichita, Kansas	Standard		Valid (manufacturer)
N682AS	Cessna 182S	Fixed-wing, single engine	Individual owner New York	Standard		Pending
N684CP	Textron Aviation Inc 182T	Fixed-wing, single engine	Textron Aviation INC Wichita, Kansas	Standard		Valid (manufacturer)
N724EW	Textron Aviation Inc 182T	Fixed-wing, single engine	Van Bortel Aircraft INC Arlington, Texas	Standard		Valid
N774TM	Textron Aviation Inc 182T	Fixed-wing, single engine	Van Bortel Aircraft INC Arlington, Texas	Standard		Valid
N788RM	Cessna 182T	Fixed-wing, single engine	Van Bortel Aircraft INC Arlington, Texas	Standard		Valid
N861CP	Textron Aviation Inc 182T	Fixed-wing, single engine	Textron Aviation INC Wichita, Kansas	Standard		Valid (manufacturer)
N875PJ	Textron Aviation Inc 182T	Fixed-wing, single engine	Van Bortel Aircraft INC Arlington, Texas	Standard		Valid
N8845K	Cessna 182T	Fixed-wing, single engine	Van Bortel Aircraft INC Arlington, Texas	Standard		Valid
N890MB	Cessna 182T	Fixed-wing, single engine	Van Bortel Aircraft INC Arlington, Texas	Standard		Valid
N9036B	Cessna 182T	Fixed-wing, single engine	Van Bortel Aircraft INC Arlington, Texas	Standard		Valid
N9309C	Cessna 182T	Fixed-wing, single engine	Van Bortel Aircraft INC Arlington, Texas	Standard		Valid

Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 5, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.