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

Lycoming TIO-540-S1AD

13 aircraft on the U.S. register carry a Lycoming TIO-540-S1AD engine, rated at about 300 horsepower. The Piper PA-32 Cherokee Six, Lance and Saratoga is the model most often fitted with it (12 aircraft). The aircraft carrying it were built between 1978 and 1992.

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-S1AD. FAA spelling: TIO-540-S1AD.

Fitted to model families

Piper PA-32 Cherokee Six, Lance and Saratoga12Baugh Milford D SEQUOIA 3001

Piper PA-32 Cherokee Six, Lance and Saratoga · Baugh Milford D SEQUOIA 300

Where they are owner's state

Georgia2Florida2Arizona2Oregon1New Jersey1North Carolina1Indiana1Iowa1Colorado1California1

Kind of aircraft

Piston singles13 (100%)

When the aircraft were built by decade

02457519707198011990

What the FAA has certified, ordered and been told about the Lycoming TIO-540-S1AD the component layer

The design is held under 1 type certificate (E14EA, held by Lycoming Engines). The FAA has issued 37 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 52 failure reports with the FAA since 1995, 6 of them in the last ten years.

FAA orders 37 airworthiness directives · newest first

2026-04-082026-04-11 · Engine (Reciprocating) · engine
2024-12-052024-21-02 · Engine (Reciprocating) · engine
2015-11-032015-19-07 · Fuel injector fuel lines · engine
2012-10-242012-19-01 · Crankshafts · engine
2012-02-242012-03-06 · Fuel servo diaphragm · engine
2012-01-252011-26-04 · Externally mounted fuel injector fuel lines · engine

All orders naming the Lycoming TIO-540-S1AD

Failure reports 52 since · what operators and shops told the FAA

0246895000614122

Parts most often reported as the reports name them

Magneto5Valve Guide3Breaker Points2Cable2Fitting2Gasket2Shaft2Bearing1Blade1Bolt1

Latest reports

2022-07-28Magneto: corroded
2014-07-02Clamp: failed
2014-06-20Cowling: damaged
2013-11-15Breaker Points: loose
2013-10-10Breaker Points: loose

Certificates and bulletins

E14EAType certificate held by Lycoming Engines · 40 models listed · revised May 24, 2012

Safety bulletins 7 · 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
2011-03-31NE-08-26R3 · Magneto/Distributor
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
Where they are
Airworthiness

These connections as data: /graph/engine/lycoming-tio-540-s1ad.json · about the eFlight graph.

Aircraft newest certificates first · 13

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N8960Y Piper
PA-32RT-300T
Fixed-wing, single engine Individual owner
Indiana
Standard 2026-06-30 ValidFAA registration status code V: Valid registration. All codes
N726GJ Piper
PA-32-301T
Fixed-wing, single engine Individual owner
New Jersey
Standard 2023-08-18 ValidFAA registration status code V: Valid registration. All codes
N4390W Piper
PA-32R-301T
Fixed-wing, single engine Individual owner
Iowa
Standard 2022-08-03 ValidFAA registration status code V: Valid registration. All codes
N728SJ Piper
PA-32R-301T
Fixed-wing, single engine Highland Aviation LLC
Flagstaff, Arizona
Standard 2022-04-11 ValidFAA registration status code V: Valid registration. All codes
N574MG Piper
PA-32RT-300T
Fixed-wing, single engine Individual owner
Florida
Standard 2021-11-29 ValidFAA registration status code V: Valid registration. All codes
N661W Piper
PA-32R-301T
Fixed-wing, single engine Jff Air LLC
Dalton, Georgia
Standard 2021-10-21 ValidFAA registration status code V: Valid registration. All codes
N8170Y Piper
PA-32R-301T
Fixed-wing, single engine Raven Aeronautics LTD
Monument, Colorado
Standard 2020-06-23 ValidFAA registration status code V: Valid registration. All codes
N30176 Piper
PA-32RT-300T
Fixed-wing, single engine Individual owner
Georgia
Standard 2020-04-01 ValidFAA registration status code V: Valid registration. All codes
N47WP Piper
PA-32-301T
Fixed-wing, single engine Co-owned owner
Florida
Standard 2019-01-07 ValidFAA registration status code V: Valid registration. All codes
N48BL Baugh Milford D
SEQUOIA 300
Fixed-wing, single engine NW Aircraft Sales & Leasing LLC
Scappoose, Oregon
Experimental 2015-11-02 ValidFAA registration status code V: Valid registration. All codes
N8210E Piper
PA-32R-301T
Fixed-wing, single engine Individual owner
North Carolina
Standard 2014-03-26 ValidFAA registration status code V: Valid registration. All codes
N3078M Piper
PA-32RT-300T
Fixed-wing, single engine Individual owner
California
Standard 2008-06-27 ValidFAA registration status code V: Valid registration. All codes
N2176V Piper
PA-32RT-300T
Fixed-wing, single engine Aspen Avionics INC
Phoenix, Arizona
Experimental 2007-03-28 ValidFAA registration status code V: Valid registration. All codes

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.