The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 5, 2026

Lycoming TIO-540-AK1A

508 aircraft on the U.S. register carry a Lycoming TIO-540-AK1A engine, rated at about 235 horsepower. The Cessna T182 Turbo Skylane is the model most often fitted with it (508 aircraft). The aircraft carrying it were built between 2002 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 TIO-540-AK1A. FAA spelling: TIO-540-AK1A.

Fitted to model families

Cessna T182 Turbo Skylane508

Cessna T182 Turbo Skylane

Where they are owner's state

California59Texas53Montana27Delaware26Colorado26Alabama25Washington20Florida20Nevada18Arizona17

Kind of aircraft

Turboprops508 (100%)

When the aircraft were built by decade

0801602403203202000742010902020

What the FAA has certified, ordered and been told about the Lycoming TIO-540-AK1A the component layer

The design is held under 1 type certificate (E14EA, held by Textron Lycoming Avco Corporation). The FAA has issued 29 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 26 failure reports with the FAA since 1995, 10 of them in the last ten years.

FAA orders 29 airworthiness directives · newest first

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
2013-11-132013-21-02 · Turbochargers · engine
2012-12-202012-24-09 · Turbocharger turbine wheel · engine

All orders naming the Lycoming TIO-540-AK1A

Failure reports 26 since · what operators and shops told the FAA

01245020816124

Parts most often reported as the reports name them

Cylinder Head4Bulkhead2Hose2Wastegate Valve2Antenna1Bearing1Bolt1Bracket1Breather1Exhaust Pipe1

Latest reports

2024-09-26Intake Pipe: loose
2019-04-05Tailpipe: cracked
2018-08-09Cylinder Head: bypassing
2018-06-25Cylinder Head: bypassing
2018-06-25Cylinder Head: bypassing

Certificates and bulletins

E14EAType certificate held by Textron Lycoming Avco Corporation · 38 models listed · revised May 18, 1998

Safety bulletins 5 · 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
2008-09-10NE-06-32R1 · Reciprocating Engine - Crankshaft
2008-07-03NE-08-32 · Propeller Governor Set Screw

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
Where they are
Biggest operators
Airworthiness

These connections as data: /graph/engine/lycoming-tio-540-ak1a.json · about the eFlight graph.

Aircraft newest certificates first · 508

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N6006T Textron Aviation Inc
T182T
Fixed-wing, single engine Textron Aviation INC
Wichita, Kansas
Standard Valid (manufacturer)FAA registration status code M: Valid, assigned to the manufacturer under its dealer certificate. All codes
N61984 Cessna
T182T
Fixed-wing, single engine Tru Flight Materials LLC
Wilmington, Delaware
Standard ValidFAA registration status code V: Valid registration. All codes
N6292J Cessna
T182T
Fixed-wing, single engine Van Bortel Aircraft INC
Arlington, Texas
Standard ValidFAA registration status code V: Valid registration. All codes
N767RT Textron Aviation Inc
T182T
Fixed-wing, single engine Van Bortel Aircraft INC
Arlington, Texas
Standard ValidFAA registration status code V: Valid registration. All codes
N81CH Cessna
T182T
Fixed-wing, single engine Individual owner
Wisconsin
Standard Pending cancellationFAA registration status code 19: Registration pending, pending cancellation. All codes
N84WE Cessna
T182T
Fixed-wing, single engine Van Bortel Aircraft INC
Arlington, Texas
Standard ValidFAA registration status code V: Valid registration. All codes
N915CR Cessna
T182T
Fixed-wing, single engine Van Bortel Aircraft INC
Arlington, Texas
Standard ValidFAA registration status code V: Valid registration. All codes
N91CY Textron Aviation Inc
T182T
Fixed-wing, single engine Van Bortel Aircraft INC
Arlington, Texas
Standard ValidFAA registration status code V: Valid registration. All codes
Previous Page 6 of 6

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.