The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 8, 2026

Lycoming O-540 series

5,244 aircraft on the U.S. register carry a Lycoming O-540 series engine, rated at about 250 horsepower. The Piper PA-28 Cherokee, Warrior, Archer and Arrow is the model most often fitted with it (1,226 aircraft). The aircraft carrying it were built between 1958 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 O-540 series (2 codes). FAA spellings: 0-540 SERIES · O-540 SERIES.

When the aircraft were built by decade

By decade built, as a table
aircraft
19404
1950428
19601,898
19701,491
1980521
1990132
2000123
20106
202011

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

The design is held under 1 type certificate (E-295, held by Lycoming Engines). The FAA has issued 28 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 304 failure reports with the FAA since 1995, 20 of them in the last ten years.

FAA orders 28 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
2022-08-152022-16-03 · Engine (RECIPROCATING) · engine
2017-08-152017-16-11 · Reciprocating Engine Power Section · engine
2012-10-242012-19-01 · Crankshafts · engine

All orders naming the Lycoming O-540 series

Failure reports 304 since · what operators and shops told the FAA

01530466195000510152025126
Failure reports by year, as a table
reports
9514
9626
975
9811
992
0015
0120
0261
0318
0425
0513
0618
0712
083
094
1011
114
125
136
143
157
161
171
183
194
203
211
223
231
242
251
261

Parts most often reported as the reports name them

Magneto11Light10Carburetor8Line8Clamp7Pin7Valve7Boot6Bulkhead6Hose6
Parts most reported, as a table
reports
Magneto11
Light10
Carburetor8
Line8
Clamp7
Pin7
Valve7
Boot6
Bulkhead6
Hose6

Latest reports

2026-05-09Thrust Button: faulty
2025-06-06Housing: failed
2024-09-25Magneto: making metal
2024-04-02Rod: scored
2023-06-27Solenoid: defective

Certificates and bulletins

E-295Type certificate held by Lycoming Engines · 47 models listed · revised April 30, 2013

Safety bulletins 10 · 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,...
2011-03-31NE-08-26R3 · Magneto/Distributor

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

The whole map of how records connect · these connections as data: /graph/engine/lycoming-o-540-series.json.

Aircraft newest certificates first · 5,244

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N7084P Piper
PA-24-250
Fixed-wing, single engine Freeman Jet LLC
Cape Coral, Florida
Standard ValidFAA registration status code V: Valid registration. All codes
N7093Z Piper
PA-25-235
Fixed-wing, single engine Mid Continent Aircraft CORP
Hayti, Missouri
Restricted ValidFAA registration status code V: Valid registration. All codes
N7117P Piper
PA-24-250
Fixed-wing, single engine Individual owner
Texas
Standard PendingFAA registration status code R: Registration pending. All codes
N72AB Piper
PA-25-235
Fixed-wing, single engine Globe Motorcycles LTD INC
Pembroke Pines, Florida
Multiple ValidFAA registration status code V: Valid registration. All codes
N72VM Mynster Thomas O
STARDUSTER II (2)
Fixed-wing, single engine Individual owner
Missouri
Experimental Sale reportedFAA registration status code 17: Sale reported, pending cancellation. All codes
N7364W Cessna
R182
Fixed-wing, single engine M Star Aviation LLC
Oconto, Wisconsin
Standard ValidFAA registration status code V: Valid registration. All codes
N738JZ Cessna
TR182
Fixed-wing, single engine Individual owner
Utah
Standard PendingFAA registration status code R: Registration pending. All codes
N738PG Cessna
R182
Fixed-wing, single engine Bas Part Sales LLC
Greeley, Colorado
Standard ValidFAA registration status code V: Valid registration. All codes
N739DC Cessna
TR182
Fixed-wing, single engine Individual owner
Pennsylvania
Standard ValidFAA registration status code V: Valid registration. All codes
N7489P Piper
PA-24-250
Fixed-wing, single engine Individual owner
Montana
Standard PendingFAA registration status code R: Registration pending. All codes
N7495P Piper
PA-24-250
Fixed-wing, single engine Individual owner
Florida
Standard Sale reportedFAA registration status code 17: Sale reported, pending cancellation. All codes
N7500P Piper
PA-24-250
Fixed-wing, single engine Bas Part Sales LLC
Greeley, Colorado
Standard ValidFAA registration status code V: Valid registration. All codes
N756SW Cessna
TR182
Fixed-wing, single engine Individual owner
New York
Standard Sale reportedFAA registration status code 7. All codes
N7716J Piper
PA-32-260
Fixed-wing, single engine Individual owner
Texas
Standard PendingFAA registration status code R: Registration pending. All codes
N7748J Piper
PA-32-260
Fixed-wing, single engine Bas Part Sales LLC
Greeley, Colorado
Standard ValidFAA registration status code V: Valid registration. All codes
N7764P Piper
PA-24-250
Fixed-wing, single engine Bas Part Sales LLC
Greeley, Colorado
Standard ValidFAA registration status code V: Valid registration. All codes
N8159P Piper
PA-24-250
Fixed-wing, single engine Individual owner
Arizona
Standard PendingFAA registration status code R: Registration pending. All codes
N8254P Piper
PA-24-250
Fixed-wing, single engine No owner on file
Standard Assigned, not yet registeredFAA registration status code 2: N-number assigned but not yet registered. All codes
N828CR Piper
PA-28-236
Fixed-wing, single engine Individual owner
Rhode Island
Standard PendingFAA registration status code R: Registration pending. All codes
N830BV Piper
PA-28-236
Fixed-wing, single engine Individual owner
Montana
Standard PendingFAA registration status code R: Registration pending. All codes
N831JR Piper
PA-24-250
Fixed-wing, single engine Individual owner
Florida
Standard PendingFAA registration status code R: Registration pending. All codes
N8381P Piper
PA-24-250
Fixed-wing, single engine Indy Air Sales LLC
Anderson, Indiana
Standard ValidFAA registration status code V: Valid registration. All codes
N8544L Piper
PA-25-235
Fixed-wing, single engine Mid Continent Aircraft CORP
Hayti, Missouri
Restricted ValidFAA registration status code V: Valid registration. All codes
N8614W Piper
PA-28-235
Fixed-wing, single engine Individual owner
Colorado
Standard PendingFAA registration status code R: Registration pending. All codes
N8702W Piper
PA-28-235
Fixed-wing, single engine Individual owner
New Mexico
Standard PendingFAA registration status code R: Registration pending. All codes
N8771W Piper
PA-28-235
Fixed-wing, single engine Individual owner
Wisconsin
Standard PendingFAA registration status code R: Registration pending. All codes
N8791W Piper
PA-28-235
Fixed-wing, single engine Individual owner
South Carolina
Standard PendingFAA registration status code R: Registration pending. All codes
N8799W Piper
PA-28-235
Fixed-wing, single engine Individual owner
California
Standard ValidFAA registration status code V: Valid registration. All codes
N8801W Piper
PA-28-235
Fixed-wing, single engine African Research Foundation INC
New York, New York
Standard RevokedFAA registration status code 22: Revoked, canceled. All codes
N8802W Piper
PA-28-235
Fixed-wing, single engine Individual owner
Puerto Rico
Standard PendingFAA registration status code R: Registration pending. All codes
N8832L Piper
PA-25-235
Fixed-wing, single engine Mid Continent Aircraft CORP
Hayti, Missouri
Restricted ValidFAA registration status code V: Valid registration. All codes
N9105W Piper
PA-28-235
Fixed-wing, single engine Individual owner
Texas
Standard PendingFAA registration status code R: Registration pending. All codes
N9119W Piper
PA-28-235
Fixed-wing, single engine Bas Part Sales LLC
Greeley, Colorado
Standard ValidFAA registration status code V: Valid registration. All codes
N9140E Maule
M-5-235C
Fixed-wing, single engine Individual owner
South Dakota
Standard Sale reportedFAA registration status code 7. All codes
N9167W Piper
PA-28-235
Fixed-wing, single engine Bas Part Sales LLC
Greeley, Colorado
Standard ValidFAA registration status code V: Valid registration. All codes
N9191E Piper
PA-24
Fixed-wing, single engine Catlin Aviation CO
Okla City, Oklahoma
None on file RevokedFAA registration status code 9: Registration certificate revoked. All codes
N92RZ Cessna
R182
Fixed-wing, single engine Individual owner
Arizona
Standard Sale reportedFAA registration status code 7. All codes
N9346W Piper
PA-28-235
Fixed-wing, single engine Individual owner
Texas
Standard PendingFAA registration status code R: Registration pending. All codes
N9470W Piper
PA-28-235
Fixed-wing, single engine Individual owner
Colorado
Standard ValidFAA registration status code V: Valid registration. All codes
N9478W Piper
PA-28-235
Fixed-wing, single engine American Aircraft Sales LLC
Lincolnshire, Illinois
Standard ValidFAA registration status code V: Valid registration. All codes
N957S Piper
PA-23-250
Fixed-wing, multi-engine Skymark Airlines
Sacramento, California
Standard RevokedFAA registration status code 9: Registration certificate revoked. All codes
N9842C Cessna
R182
Fixed-wing, single engine Individual owner
Montana
Standard Sale reportedFAA registration status code 7. All codes
N9881P Piper
PA-25-235
Fixed-wing, single engine Individual owner
South Carolina
Restricted Sale reportedFAA registration status code 7. All codes
N998FB Piper
PA-23-250
Fixed-wing, multi-engine No owner on file
Standard Assigned, not yet registeredFAA registration status code 2: N-number assigned but not yet registered. All codes

Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 8, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.