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 Textron Lycoming Avco Corporation). 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 Textron Lycoming Avco Corporation · 73 models listed · revised August 1, 1998

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
N1738C	Cessna 182T	Fixed-wing, single engine	Scc Aviation LLC Caldwell, Texas	Standard	2015-12-22	Valid
N511DW	Textron Aviation Inc 182T	Fixed-wing, single engine	D.B. Wood LLC Levering, Michigan	Standard	2015-11-19	Valid
N896CP	Textron Aviation Inc 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2015-10-07	Valid
N897CP	Textron Aviation Inc 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2015-10-07	Valid
N928CP	Textron Aviation Inc 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2015-10-07	Valid
N930CP	Textron Aviation Inc 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2015-10-07	Valid
N6330D	Cessna 182T	Fixed-wing, single engine	Reliant Technologies Incorp Port Allen, Louisiana	Standard	2015-09-30	Valid
N1192S	Cessna 182T	Fixed-wing, single engine	Individual owner Texas	Standard	2015-09-16	Valid
N65KC	Cessna 182T	Fixed-wing, single engine	Barr Air Patrol LLC Mesquite, Texas	Standard	2015-08-18	Valid
N9005R	Cessna 182T	Fixed-wing, single engine	Individual owner Texas	Standard	2015-08-17	Valid
N419JA	Cessna 182T	Fixed-wing, single engine	Raw Aviation LLC Wichita, Kansas	Standard	2015-07-07	Valid
N6346E	Cessna 182T	Fixed-wing, single engine	Individual owner North Carolina	Standard	2015-05-06	Valid
N3552D	Cessna 182T	Fixed-wing, single engine	Individual owner Texas	Standard	2015-04-09	Valid
N6275S	Cessna 182T	Fixed-wing, single engine	Michigan Dept of Natural Resources Roscommon, Michigan	Standard	2015-03-05	Valid
N2396K	Cessna 182T	Fixed-wing, single engine	Co-owned owner Alabama	Standard	2015-02-13	Valid
N747GK	Cessna 182T	Fixed-wing, single engine	Eastern Stearman INC Trustee Leesburg, Virginia	Standard	2014-12-04	Valid
N1174C	Cessna 182T	Fixed-wing, single engine	Georgia Forestry Commission Macon, Georgia	Standard	2014-09-11	Valid
N6013K	Cessna 182T	Fixed-wing, single engine	Ldm LLC Cuba, Missouri	Standard	2014-08-19	Valid
N1710G	Cessna 182T	Fixed-wing, single engine	National Test Pilot School Mojave, California	Standard	2014-03-06	Valid
N1290F	Cessna 182T	Fixed-wing, single engine	Kilm LLC Wilmington, North Carolina	Standard	2014-02-25	Valid
N223EM	Cessna 182T	Fixed-wing, single engine	Kqm Aviation Manassas, Virginia	Standard	2014-02-06	Valid
N452CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Montgomery, Alabama	Standard	2013-12-05	Valid
N331MS	Cessna 182T	Fixed-wing, single engine	Aircraft Guaranty CORP Trustee Oklahoma City, Oklahoma	Standard	2013-08-29	Valid
N2451Z	Cessna 182T	Fixed-wing, single engine	Individual owner Virginia	Experimental	2013-07-16	Valid
N5198J	Cessna 182T	Fixed-wing, single engine	Michigan Dept of Natural Resources Roscommon, Michigan	Standard	2013-07-16	Valid
N6334W	Cessna 182T	Fixed-wing, single engine	Individual owner Wisconsin	Standard	2013-07-16	Valid
N9402D	Cessna 182T	Fixed-wing, single engine	H C e Leasing LLC Cleveland, Tennessee	Standard	2013-05-29	Valid
N2437L	Cessna 182T	Fixed-wing, single engine	Lean Enterprises INC Brookhaven, Mississippi	Standard	2013-04-16	Valid
N21331	Cessna 182T	Fixed-wing, single engine	J-Air Eagle LLC San Antonio, Texas	Standard	2013-03-27	Valid
N821WW	Cessna 182T	Fixed-wing, single engine	Double Whiskey Flyers LLC Highlands Ranch, Colorado	Standard	2013-03-04	Valid
N270CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2013-01-28	Valid
N273CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2013-01-04	Valid
N383KD	Cessna 182T	Fixed-wing, single engine	T-6 LLC Wilmington, Delaware	Standard	2013-01-04	Valid
N439CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2013-01-04	Valid
N445CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2013-01-04	Valid
N447CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2013-01-04	Valid
N168DK	Cessna 182T	Fixed-wing, single engine	Otv Leasing Greenville, Delaware	Standard	2013-01-03	Valid
N326PS	Cessna 182T	Fixed-wing, single engine	Psl Surveys Greenville, Delaware	Standard	2013-01-03	Valid
N687RT	Cessna 182T	Fixed-wing, single engine	Fvx Research Greenville, Delaware	Standard	2013-01-03	Valid
N13433	Cessna 182T	Fixed-wing, single engine	Seamoose Aviation LLC Shelton, Connecticut	Standard	2012-12-12	Valid
N6038V	Cessna 182T	Fixed-wing, single engine	Edb Air INC Wilsonville, Oregon	Standard	2012-12-11	Valid
N183CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2012-10-31	Valid
N188CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2012-10-31	Valid
N226CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2012-10-31	Valid
N230CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2012-10-31	Valid
N237CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2012-10-31	Valid
N259CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2012-10-31	Valid
N6193R	Cessna 182T	Fixed-wing, single engine	Aircraft Guaranty CORP Trustee Oklahoma City, Oklahoma	Standard	2012-10-04	Valid
N177CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2012-08-08	Valid
N179CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2012-08-03	Valid
N874DT	Cessna 182	Fixed-wing, single engine	N874Dt LLC Canadensis, Pennsylvania	Standard	2012-07-27	Valid
N152CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2012-07-16	Valid
N168CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2012-07-16	Valid
N175CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2012-07-16	Valid
N229CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2012-07-16	Valid
N521DB	Cessna 182T	Fixed-wing, single engine	Co-owned owner Indiana	Standard	2012-05-14	Valid
N291JD	Cessna 182T	Fixed-wing, single engine	Dahapov LLC Boca Raton, Florida	Standard	2012-05-03	Valid
N9552R	Cessna 182S	Fixed-wing, single engine	Cauv LLC Cincinnati, Ohio	Standard	2012-03-13	Valid
N21964	Cessna 182T	Fixed-wing, single engine	Matt Anchordoguy CO LLC Vina, California	Standard	2012-03-02	Valid
N1171J	Cessna 182T	Fixed-wing, single engine	National Test Pilot School Mojave, California	Standard	2012-02-10	Valid
N910LF	Cessna 182T	Fixed-wing, single engine	Nby Productions Bristow, Virginia	Standard	2012-01-05	Valid
N17011	Cessna 182T	Fixed-wing, single engine	Saunders Aviation LLC South Portland, Maine	Standard	2011-12-29	Valid
N649CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2011-12-19	Valid
N687CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2011-12-19	Valid
N448ES	Cessna 182S	Fixed-wing, single engine	Individual owner Wisconsin	Standard	2011-10-04	Valid
N231SP	Cessna 182T	Fixed-wing, single engine	Iowa State Patrol Des Moines, Iowa	Standard	2011-09-15	Valid
N269SA	Cessna 182T	Fixed-wing, single engine	Althof Equipment Management LLC Jupiter, Florida	Standard	2011-07-18	Valid
N481CP	Cessna 182T	Fixed-wing, single engine	Blue Water Aviation LLC Oakman, Alabama	Standard	2011-05-19	Valid
N302MP	Cessna 182T	Fixed-wing, single engine	Kqm Aviation Bristow, Virginia	Standard	2011-05-13	Valid
N142LJ	Cessna 182T	Fixed-wing, single engine	Obr Leasing Bristow, Virginia	Standard	2011-03-28	Valid
N102BR	Cessna 182T	Fixed-wing, single engine	Otv Leasing Bristow, Virginia	Standard	2011-03-24	Valid
N274BB	Cessna 182T	Fixed-wing, single engine	Lcb Leasing Manassas, Virginia	Standard	2011-03-24	Valid
N806TH	Cessna 182T	Fixed-wing, single engine	Fvx Research Bristow, Virginia	Standard	2011-03-24	Valid
N906TM	Cessna 182T	Fixed-wing, single engine	Rkt Productions Bristow, Virginia	Standard	2011-03-24	Valid
N1194W	Cessna 182T	Fixed-wing, single engine	Pm Technology and Leasing LLC Inver Grove, Minnesota	Standard	2011-03-23	Valid
N9022H	Cessna 182T	Fixed-wing, single engine	Individual owner Texas	Standard	2011-01-19	Valid
N311SB	Cessna 182T	Fixed-wing, single engine	Nbr Aviation Manassas, Virginia	Standard	2011-01-14	Valid
N318SJ	Cessna 182T	Fixed-wing, single engine	Obr Leasing Manassas, Virginia	Standard	2011-01-14	Valid
N323LP	Cessna 182T	Fixed-wing, single engine	Rkt Productions Manassas, Virginia	Standard	2011-01-14	Valid
N361DB	Cessna 182T	Fixed-wing, single engine	Lcb Leasing Manassas, Virginia	Standard	2011-01-14	Valid
N482CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Montgomery, Alabama	Standard	2011-01-14	Valid
N486CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Montgomery, Alabama	Standard	2011-01-14	Valid
N493CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2011-01-14	Valid
N629CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2011-01-14	Valid
N731CL	Cessna 182T	Fixed-wing, single engine	Nby Productions Manassas, Virginia	Standard	2011-01-14	Valid
N774CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Montgomery, Alabama	Standard	2011-01-14	Valid
N75BN	Cessna 182S	Fixed-wing, single engine	Bernic INC Trustee Wilmington, Delaware	Standard	2011-01-05	Valid
N717CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Montgomery, Alabama	Standard	2010-12-10	Valid
N644CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2010-11-16	Valid
N679CP	Cessna 182T	Fixed-wing, single engine	Civil Air Patrol Maxwell Afb, Alabama	Standard	2010-11-16	Valid
N461AJ	Cessna 182T	Fixed-wing, single engine	Rkt Productions Bristow, Virginia	Standard	2010-08-25	Valid
N576DS	Cessna 182T	Fixed-wing, single engine	Lcb Leasing Bristow, Virginia	Standard	2010-08-25	Valid
N912EX	Cessna 182T	Fixed-wing, single engine	Obr Leasing Bristow, Virginia	Standard	2010-08-25	Valid
N986DK	Cessna 182T	Fixed-wing, single engine	Nbr Aviation Bristow, Virginia	Standard	2010-08-25	Valid
N879WM	Cessna 182T	Fixed-wing, single engine	Psl Surveys Bristow, Virginia	Standard	2010-08-11	Valid
N3033L	Cessna 182T	Fixed-wing, single engine	Individual owner Maryland	Standard	2010-07-28	Valid
N984JS	Cessna 182T	Fixed-wing, single engine	Fvx Research Bristow, Virginia	Standard	2010-07-08	Valid
N1251D	Cessna 182T	Fixed-wing, single engine	Erjoaero LLC Stuart, Florida	Standard	2010-06-10	Valid
N267RH	Cessna 182T	Fixed-wing, single engine	Pxw Services Bristow, Virginia	Standard	2010-06-08	Valid
N562CB	Cessna 182T	Fixed-wing, single engine	Kqm Aviation Bristow, Virginia	Standard	2010-06-08	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.