The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 9, 2026

Lycoming O-320 series

27,315 aircraft on the U.S. register carry a Lycoming O-320 series engine, rated at about 180 horsepower. The Cessna 172 Skyhawk is the model most often fitted with it (9,462 aircraft). The aircraft carrying it were built between 1949 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-320 series (2 codes). FAA spellings: 0-320 SERIES · O-320 SERIES.

When the aircraft were built by decade

By decade built, as a table
aircraft
19305
1940234
19502,383
19605,444
197011,405
19801,935
19901,132
2000831
201099
202055

What the FAA has certified, ordered and been told about the Lycoming O-320 series the component layer

The design is held under 1 type certificate (E-274, held by Lycoming Engines). The FAA has issued 29 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 349 failure reports with the FAA since 1995, 19 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
2022-08-152022-16-03 · Engine (RECIPROCATING) · engine
2012-03-272012-03-07 · Carburetor · engine
2008-10-202008-19-05 · Parallel Valve'' reciprocating engines · engine
2006-01-312005-26-10 · ECi cylinder assemblies. · engine

All orders naming the Lycoming O-320 series

Failure reports 349 since · what operators and shops told the FAA

010203141950106111621426
Failure reports by year, as a table
reports
952
961
972
986
007
0139
0224
0339
0430
0541
0623
0732
0818
0915
1013
117
1210
134
146
152
169
171
186
191
203
211
232
251
264

Parts most often reported as the reports name them

Spar18Tube17Cylinder15Bulkhead9Alternator8Control Cable8Bolt7Carburetor7Fitting6Float6
Parts most reported, as a table
reports
Spar18
Tube17
Cylinder15
Bulkhead9
Alternator8
Control Cable8
Bolt7
Carburetor7
Fitting6
Float6

Latest reports

2026-09-03Gascolator: dirty
2026-05-19Impulse Coupling: unserviceable
2026-03-10Cylinder Head: cracked
2026-03-05Cylinder: cracked
2025-11-24Cylinder: cracked

Certificates and bulletins

E-274Type certificate held by Lycoming Engines · 60 models listed · revised April 30, 2013

Safety bulletins 17 · advice, not orders

2022-09-26NE-06-31R6 · Engine Lubricating Oils
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,...

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-320-series.json.

Aircraft newest certificates first · 27,315

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N1889H Piper
PA-28-140
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2022-10-22 ValidFAA registration status code V: Valid registration. All codes
N384MA Grumman American Avn. Corp.
GA-7
Fixed-wing, multi-engine Knoxville Aviation LLC
Lenoir City, Tennessee
Standard 2022-10-22 ValidFAA registration status code V: Valid registration. All codes
N54829 Cessna
172P
Fixed-wing, single engine Aviate LLC DBA
Hazelton, Idaho
Standard 2022-10-22 ValidFAA registration status code V: Valid registration. All codes
N734WP Cessna
172N
Fixed-wing, single engine Laps LLC
Elkhorn, Wisconsin
Standard 2022-10-22 ValidFAA registration status code V: Valid registration. All codes
N788RK Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2022-10-22 ValidFAA registration status code V: Valid registration. All codes
N941TW Cessna
172P
Fixed-wing, single engine Hodge Flight Services LLC
Pittsburg, California
Standard 2022-10-22 ValidFAA registration status code V: Valid registration. All codes
N177HL Cessna
177
Fixed-wing, single engine Individual owner
Tennessee
Standard 2022-10-21 ValidFAA registration status code V: Valid registration. All codes
N9877U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Co-owned owner
Washington
Standard 2022-10-21 ValidFAA registration status code V: Valid registration. All codes
N9937D Piper
PA-18A 150
Fixed-wing, single engine Sky High Adventures LLC
Wilmington, Delaware
Restricted 2022-10-21 ValidFAA registration status code V: Valid registration. All codes
N15283 Piper
PA-28-140
Fixed-wing, single engine Summit Flight Academy LLC
Peculiar, Missouri
Standard 2022-10-20 ValidFAA registration status code V: Valid registration. All codes
N26887 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Co-owned owner
Texas
Standard 2022-10-20 ValidFAA registration status code V: Valid registration. All codes
N277MM Piper
PA-28-140
Fixed-wing, single engine Individual owner
Connecticut
Standard 2022-10-20 ValidFAA registration status code V: Valid registration. All codes
N41376 Piper
PA-28-151
Fixed-wing, single engine Berkshire Aviation Enterprises LLC
Great Barrington, Massachusetts
Standard 2022-10-20 ValidFAA registration status code V: Valid registration. All codes
N4283T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Michigan
Standard 2022-10-20 ValidFAA registration status code V: Valid registration. All codes
N599CM Cessna
172K
Fixed-wing, single engine Mscm Partners LLC
Fairfield, Texas
Standard 2022-10-20 ValidFAA registration status code V: Valid registration. All codes
N64048 Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2022-10-20 ValidFAA registration status code V: Valid registration. All codes
N739PS Cessna
172N
Fixed-wing, single engine Darkhorse Aviation LLC
Hesperus, Colorado
Standard 2022-10-20 ValidFAA registration status code V: Valid registration. All codes
N8541C Brandborg Penn C
PE 20/14 RANGER
Fixed-wing, single engine Individual owner
Alaska
Experimental 2022-10-20 ValidFAA registration status code V: Valid registration. All codes
N2901X Cessna
177
Fixed-wing, single engine Individual owner
Texas
Standard 2022-10-19 ValidFAA registration status code V: Valid registration. All codes
N432ME Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
California
Standard 2022-10-19 ValidFAA registration status code V: Valid registration. All codes
N44KL Linch Kenneth T
RV-4
Fixed-wing, single engine Individual owner
Virginia
Experimental 2022-10-19 ValidFAA registration status code V: Valid registration. All codes
N59RV Reps Francis M
RV 3
Fixed-wing, single engine Individual owner
California
Experimental 2022-10-19 ValidFAA registration status code V: Valid registration. All codes
N738NY Cessna
172N
Fixed-wing, single engine Monmouth Area Flying Club INC
Lakewood, New Jersey
Standard 2022-10-19 ValidFAA registration status code V: Valid registration. All codes
N1146V Reitan Richard M
RV-4
Fixed-wing, single engine Plane Cents LLC
Henderson, Nevada
Experimental 2022-10-18 ValidFAA registration status code V: Valid registration. All codes
N4297Q Cessna
172L
Fixed-wing, single engine Individual owner
California
Standard 2022-10-18 ValidFAA registration status code V: Valid registration. All codes
N46696 Cessna
172L
Fixed-wing, single engine Moses Aviation Services LLC
Uvalde, Texas
Standard 2022-10-18 ValidFAA registration status code V: Valid registration. All codes
N5123E Cessna
172N
Fixed-wing, single engine Individual owner
New York
Standard 2022-10-18 ValidFAA registration status code V: Valid registration. All codes
N65628 Cessna
172P
Fixed-wing, single engine Circle Nineteen Aviation LLC
Burlington, Connecticut
Standard 2022-10-18 ValidFAA registration status code V: Valid registration. All codes
N72MV Elrod Mike
RV8A
Fixed-wing, single engine Co-owned owner
Nebraska
Experimental 2022-10-18 ValidFAA registration status code V: Valid registration. All codes
N73TD Bellanca
7GCAA
Fixed-wing, single engine Individual owner
Louisiana
Standard 2022-10-18 ValidFAA registration status code V: Valid registration. All codes
N884JS Bellanca
7GCAA
Fixed-wing, single engine Individual owner
Florida
Standard 2022-10-18 ValidFAA registration status code V: Valid registration. All codes
N12466 Cessna
172M
Fixed-wing, single engine Leaseair LLC
Wilmington, Delaware
Standard 2022-10-17 ValidFAA registration status code V: Valid registration. All codes
N128MA Cessna
172M
Fixed-wing, single engine Fca Flight Center INC
Fitchburg, Massachusetts
Standard 2022-10-17 ValidFAA registration status code V: Valid registration. All codes
N1642P Piper
PA-22-150
Fixed-wing, single engine Bangerter Timothy W
Leoti, Kansas
Standard 2022-10-17 ValidFAA registration status code V: Valid registration. All codes
N55163 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Mississippi
Standard 2022-10-17 ValidFAA registration status code V: Valid registration. All codes
N61VL Coussens Jerry
LANCAIR 320/235
Fixed-wing, single engine Individual owner
Idaho
Experimental 2022-10-17 ValidFAA registration status code V: Valid registration. All codes
N64135 Cessna
172M
Fixed-wing, single engine Flying Mermaid LLC
Aiea, Hawaii
Standard 2022-10-17 ValidFAA registration status code V: Valid registration. All codes
N172UZ Cessna
172P
Fixed-wing, single engine Mp Aviation LLC
Ogden, Utah
Standard 2022-10-15 ValidFAA registration status code V: Valid registration. All codes
N228TF Cessna
172N
Fixed-wing, single engine Top Flight Aviation INC
Corona, California
Standard 2022-10-15 ValidFAA registration status code V: Valid registration. All codes
N2321M Piper
PA-28-161
Fixed-wing, single engine Individual owner
California
Standard 2022-10-15 ValidFAA registration status code V: Valid registration. All codes
N2647P Piper
PA-22
Fixed-wing, single engine Trinkle Aviation LLC
Kingsburg, California
Standard 2022-10-15 ValidFAA registration status code V: Valid registration. All codes
N2962X Cessna
177
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2022-10-15 ValidFAA registration status code V: Valid registration. All codes
N3077X Birk Helge
GLASTAR
Fixed-wing, single engine Individual owner
Washington
Experimental 2022-10-15 ValidFAA registration status code V: Valid registration. All codes
N3165E Cessna
172N
Fixed-wing, single engine Jlk Management LLC
Kerrville, Texas
Standard 2022-10-15 ValidFAA registration status code V: Valid registration. All codes
N3691A Piper
PA-18A
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-10-15 ValidFAA registration status code V: Valid registration. All codes
N46526 Cessna
172K
Fixed-wing, single engine Bluebird Aviation LLC
Arrington, Tennessee
Standard 2022-10-15 ValidFAA registration status code V: Valid registration. All codes
N4707C Piper
PA-22
Fixed-wing, single engine Individual owner
Washington
Standard 2022-10-15 ValidFAA registration status code V: Valid registration. All codes
N6366R Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2022-10-15 ValidFAA registration status code V: Valid registration. All codes
N733RW Cessna
172N
Fixed-wing, single engine Co-owned owner
Vermont
Standard 2022-10-15 ValidFAA registration status code V: Valid registration. All codes
N80543 Cessna
172M
Fixed-wing, single engine Redwire LLC
Collierville, Tennessee
Standard 2022-10-15 ValidFAA registration status code V: Valid registration. All codes
N9573V Cessna
172M
Fixed-wing, single engine Individual owner
Texas
Standard 2022-10-15 ValidFAA registration status code V: Valid registration. All codes
N1885J Piper
PA-28-140
Fixed-wing, single engine Gem Aviation CORP
Sugar Land, Texas
Standard 2022-10-14 ValidFAA registration status code V: Valid registration. All codes
N5092M Beech
B19
Fixed-wing, single engine Individual owner
Texas
Standard 2022-10-14 ValidFAA registration status code V: Valid registration. All codes
N5129V Morrisey
2150A
Fixed-wing, single engine Individual owner
Oregon
Multiple 2022-10-14 ValidFAA registration status code V: Valid registration. All codes
N53J Cessna
172N
Fixed-wing, single engine Individual owner
Louisiana
Standard 2022-10-14 ValidFAA registration status code V: Valid registration. All codes
N6622W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Ohio
Standard 2022-10-14 ValidFAA registration status code V: Valid registration. All codes
N868SA Cessna
172M
Fixed-wing, single engine S O W Aviation LLC
Crystal River, Florida
Standard 2022-10-14 ValidFAA registration status code V: Valid registration. All codes
N9503W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
California
Standard 2022-10-14 ValidFAA registration status code V: Valid registration. All codes
N357MT Piper
PA-28-140
Fixed-wing, single engine J & F Aviation Adventure LLC
North Fort Myers, Florida
Standard 2022-10-13 ValidFAA registration status code V: Valid registration. All codes
N46281 Cessna
172I
Fixed-wing, single engine Individual owner
New Jersey
Standard 2022-10-13 ValidFAA registration status code V: Valid registration. All codes
N46719 Cessna
172K
Fixed-wing, single engine Individual owner
New Jersey
Standard 2022-10-13 ValidFAA registration status code V: Valid registration. All codes
N514RB Cessna
172M
Fixed-wing, single engine Osprey Holding Company LLC
Foley, Alabama
Standard 2022-10-13 ValidFAA registration status code V: Valid registration. All codes
N8585D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
South Dakota
Standard 2022-10-13 ValidFAA registration status code V: Valid registration. All codes
N32066 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Florida
Standard 2022-10-12 ValidFAA registration status code V: Valid registration. All codes
N4182J Piper
PA-28-161
Fixed-wing, single engine Bialecki Aviation Leasing LLC
Getzville, New York
Standard 2022-10-12 ValidFAA registration status code V: Valid registration. All codes
N53752 Bellanca
7GCBC
Fixed-wing, single engine Vectors West LLC
Coeur D Alene, Idaho
Standard 2022-10-12 ValidFAA registration status code V: Valid registration. All codes
N9543H Cessna
172M
Fixed-wing, single engine Individual owner
Florida
Standard 2022-10-12 ValidFAA registration status code V: Valid registration. All codes
N13830 Cessna
172M
Fixed-wing, single engine Iowa Lakes Community College
Estherville, Iowa
Standard 2022-10-11 ValidFAA registration status code V: Valid registration. All codes
N20865 Cessna
172M
Fixed-wing, single engine Agasair LLC
East Hampton, New York
Standard 2022-10-11 ValidFAA registration status code V: Valid registration. All codes
N35340 Cessna
172I
Fixed-wing, single engine Individual owner
Minnesota
Standard 2022-10-11 ValidFAA registration status code V: Valid registration. All codes
N600GG Bellanca
7GCAA
Fixed-wing, single engine Nlh Aviation LLC
College Station, Texas
Standard 2022-10-11 ValidFAA registration status code V: Valid registration. All codes
N6473D Cessna
172N
Fixed-wing, single engine Individual owner
Florida
Standard 2022-10-11 ValidFAA registration status code V: Valid registration. All codes
N789BN Norris Bert
RV9A
Fixed-wing, single engine Co-owned owner
Florida
Experimental 2022-10-11 ValidFAA registration status code V: Valid registration. All codes
N974BD Mcconnell H James
BD-4
Fixed-wing, single engine Co-owned owner
Illinois
Experimental 2022-10-11 ValidFAA registration status code V: Valid registration. All codes
N2084E Cessna
172N
Fixed-wing, single engine Individual owner
Michigan
Standard 2022-10-08 ValidFAA registration status code V: Valid registration. All codes
N5112W Piper
PA-28
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2022-10-08 ValidFAA registration status code V: Valid registration. All codes
N55064 Piper
PA-28-140
Fixed-wing, single engine Western Skyways INC
Montrose, Colorado
Standard 2022-10-08 ValidFAA registration status code V: Valid registration. All codes
N5534E Cessna
172N
Fixed-wing, single engine Individual owner
Texas
Standard 2022-10-08 ValidFAA registration status code V: Valid registration. All codes
N6307J Cessna
172N
Fixed-wing, single engine Individual owner
Texas
Standard 2022-10-08 ValidFAA registration status code V: Valid registration. All codes
N9511J Piper
PA-28-150
Fixed-wing, single engine Individual owner
California
Standard 2022-10-08 ValidFAA registration status code V: Valid registration. All codes
N9871K Piper
PA-28-161
Fixed-wing, single engine Beverly Flight Center LLC
Middleton, Massachusetts
Standard 2022-10-08 ValidFAA registration status code V: Valid registration. All codes
N19882 Cessna
172M
Fixed-wing, single engine Individual owner
Louisiana
Standard 2022-10-07 ValidFAA registration status code V: Valid registration. All codes
N3129Z Piper
PA-22-160
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-10-07 ValidFAA registration status code V: Valid registration. All codes
N5720W Piper
PA-28-160
Fixed-wing, single engine Third Step 2 LLC
Gilbert, Arizona
Standard 2022-10-07 ValidFAA registration status code V: Valid registration. All codes
N5834U Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2022-10-07 ValidFAA registration status code V: Valid registration. All codes
N738ZE Cessna
172N
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2022-10-07 ValidFAA registration status code V: Valid registration. All codes
N912LZ Seiders Richard F
VANS RV6A
Fixed-wing, single engine Co-owned owner
Alabama
Experimental 2022-10-07 ValidFAA registration status code V: Valid registration. All codes
N4880T Piper
PA-28-140
Fixed-wing, single engine Itechtives Company LLC
Purcellville, Virginia
Standard 2022-10-06 ValidFAA registration status code V: Valid registration. All codes
N5430W Piper
PA-28
Fixed-wing, single engine Co-owned owner
New York
Standard 2022-10-06 ValidFAA registration status code V: Valid registration. All codes
N5559M Aero Commander
100
Fixed-wing, single engine Individual owner
California
Standard 2022-10-06 ValidFAA registration status code V: Valid registration. All codes
N6888W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Mississippi
Standard 2022-10-06 ValidFAA registration status code V: Valid registration. All codes
N7318J Piper
PA-28-140
Fixed-wing, single engine Hdr Aero LLC
Lewes, Delaware
Standard 2022-10-06 ValidFAA registration status code V: Valid registration. All codes
N7359J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2022-10-06 ValidFAA registration status code V: Valid registration. All codes
N1066Q Piper
PA-20-135
Fixed-wing, single engine Individual owner
New Mexico
Standard 2022-10-05 ValidFAA registration status code V: Valid registration. All codes
N1503X Piper
PA-28-140
Fixed-wing, single engine Gasoline Valley LLC
Clyde, Michigan
Standard 2022-10-05 ValidFAA registration status code V: Valid registration. All codes
N326PC Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-10-05 ValidFAA registration status code V: Valid registration. All codes
N474VM Piper
PA-22-150
Fixed-wing, single engine Viking Aviation LLC
Rockport, Maine
Standard 2022-10-05 ValidFAA registration status code V: Valid registration. All codes
N5514U Piper
PA-28-140
Fixed-wing, single engine Checkers Investments INC
Edmond, Oklahoma
Standard 2022-10-05 ValidFAA registration status code V: Valid registration. All codes
N79136 Cessna
172K
Fixed-wing, single engine
Standard 2022-10-05 ValidFAA registration status code V: Valid registration. All codes
N109GP Piper
PA-28-161
Fixed-wing, single engine Cash Management Consulting LLC
Granite Springs, New York
Standard 2022-10-04 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 9, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.