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
N5227E Cessna
172N
Fixed-wing, single engine Ace of Spades Aviation LLC
Las Vegas, Nevada
Standard 2023-03-18 ValidFAA registration status code V: Valid registration. All codes
N55144 Cessna
172P
Fixed-wing, single engine Bell Air LLC
Las Cruces, New Mexico
Standard 2023-03-18 ValidFAA registration status code V: Valid registration. All codes
N5517F Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Arkansas
Standard 2023-03-18 ValidFAA registration status code V: Valid registration. All codes
N7296Q Cessna
172L
Fixed-wing, single engine Rich Aviation Services LLC
Fort Worth, Texas
Standard 2023-03-18 ValidFAA registration status code V: Valid registration. All codes
N73365 Cessna
172M
Fixed-wing, single engine Individual owner
Kansas
Standard 2023-03-18 ValidFAA registration status code V: Valid registration. All codes
N8732M Beech
23
Fixed-wing, single engine Musketeer Mike LLC
Yukon, Oklahoma
Standard 2023-03-18 ValidFAA registration status code V: Valid registration. All codes
N2968P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Missouri
Standard 2023-03-17 ValidFAA registration status code V: Valid registration. All codes
N3608Z Piper
PA-22-160
Fixed-wing, single engine Individual owner
Oregon
Standard 2023-03-17 ValidFAA registration status code V: Valid registration. All codes
N4400R Cessna
172M
Fixed-wing, single engine Bophades LLC
Fort Pierce, Florida
Standard 2023-03-17 ValidFAA registration status code V: Valid registration. All codes
N6072W Piper
PA-28-140
Fixed-wing, single engine Hillman Maritime Services LLC
Lafayette, Louisiana
Standard 2023-03-17 ValidFAA registration status code V: Valid registration. All codes
N738LG Cessna
172N
Fixed-wing, single engine Individual owner
Nevada
Standard 2023-03-17 ValidFAA registration status code V: Valid registration. All codes
N754GA Grumman American Avn. Corp.
GA-7
Fixed-wing, multi-engine Quest Technical Sales and Marketing INC
Camarillo, California
Standard 2023-03-17 ValidFAA registration status code V: Valid registration. All codes
N8040D Piper
PA-22-150
Fixed-wing, single engine Reboot Charity INC
West Palm Beach, Florida
Standard 2023-03-17 ValidFAA registration status code V: Valid registration. All codes
N26664 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Grumman N26664 LLC
Charlotte, North Carolina
Standard 2023-03-16 ValidFAA registration status code V: Valid registration. All codes
N442HB Cessna
172M
Fixed-wing, single engine Airborne LLC
Wilmington, Delaware
Standard 2023-03-16 ValidFAA registration status code V: Valid registration. All codes
N7676F Piper
PA-28-151
Fixed-wing, single engine Nationwide Aviation LLC
Hudson Oaks, Texas
Standard 2023-03-16 ValidFAA registration status code V: Valid registration. All codes
N7998G Cessna
172L
Fixed-wing, single engine Individual owner
Michigan
Standard 2023-03-16 ValidFAA registration status code V: Valid registration. All codes
N101RK Cessna
172M
Fixed-wing, single engine Individual owner
Louisiana
Standard 2023-03-15 ValidFAA registration status code V: Valid registration. All codes
N12776 Cessna
172M
Fixed-wing, single engine Individual owner
Texas
Standard 2023-03-15 ValidFAA registration status code V: Valid registration. All codes
N20504 Cessna
172M
Fixed-wing, single engine Yoanna Flight School INC
Fort Myers, Florida
Standard 2023-03-15 Reports overdueFAA registration status code N: Non-citizen corporation that has not returned its flight-hour reports. All codes
N26172 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Flying Tigers Flight School LTD
Houston, Texas
Standard 2023-03-15 ValidFAA registration status code V: Valid registration. All codes
N2841X Cessna
177
Fixed-wing, single engine Co-owned owner
Florida
Standard 2023-03-15 ValidFAA registration status code V: Valid registration. All codes
N29442 Cessna
177
Fixed-wing, single engine Individual owner
Virginia
Standard 2023-03-15 ValidFAA registration status code V: Valid registration. All codes
N3847P Piper
PA-22-150
Fixed-wing, single engine Withheld at owner's request
Standard 2023-03-15 ValidFAA registration status code V: Valid registration. All codes
N417FL Piper
PA-28-140
Fixed-wing, single engine Individual owner
Virginia
Standard 2023-03-15 ValidFAA registration status code V: Valid registration. All codes
N41AM Cessna
172M
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-03-15 ValidFAA registration status code V: Valid registration. All codes
N7269F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Iowa
Standard 2023-03-15 ValidFAA registration status code V: Valid registration. All codes
N733JM Cessna
172N
Fixed-wing, single engine Thunderbird Aviation LLC
Littleton, Colorado
Standard 2023-03-15 ValidFAA registration status code V: Valid registration. All codes
N84400 Piper
PA-28-161
Fixed-wing, single engine N84400 LLC
Chamblee, Georgia
Standard 2023-03-15 ValidFAA registration status code V: Valid registration. All codes
N920CJ Champion
7GCB
Fixed-wing, single engine Individual owner
Colorado
Standard 2023-03-15 ValidFAA registration status code V: Valid registration. All codes
N9596L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Ohio
Standard 2023-03-15 ValidFAA registration status code V: Valid registration. All codes
N9968V Cessna
172M
Fixed-wing, single engine Cynthiana Flying Group CORP
Cynthiana, Kentucky
Standard 2023-03-15 ValidFAA registration status code V: Valid registration. All codes
N9989W Piper
PA-28-140
Fixed-wing, single engine Dnr Solutions LLC
Idaho Falls, Idaho
Standard 2023-03-15 ValidFAA registration status code V: Valid registration. All codes
N2562F Champion
7GCAA
Fixed-wing, single engine Individual owner
Texas
Standard 2023-03-14 ValidFAA registration status code V: Valid registration. All codes
N41623 Piper
PA-28-180
Fixed-wing, single engine Airplanesusa LLC
Schaumburg, Illinois
Standard 2023-03-14 ValidFAA registration status code V: Valid registration. All codes
N4810G Cessna
172N
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-03-14 ValidFAA registration status code V: Valid registration. All codes
N5107H Cessna
172M
Fixed-wing, single engine Flyit LLC
Camas, Washington
Standard 2023-03-14 ValidFAA registration status code V: Valid registration. All codes
N8341R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2023-03-14 ValidFAA registration status code V: Valid registration. All codes
N1379U Cessna
172M
Fixed-wing, single engine High Flight Academy LLC
Allison Park, Pennsylvania
Standard 2023-03-13 ValidFAA registration status code V: Valid registration. All codes
N336DB Botens David F
RV9-A
Fixed-wing, single engine Individual owner
Minnesota
Experimental 2023-03-13 ValidFAA registration status code V: Valid registration. All codes
N39RF Fraga Roland M
FRAGA GLASSAIR SH-2
Fixed-wing, single engine Individual owner
Texas
Experimental 2023-03-13 ValidFAA registration status code V: Valid registration. All codes
N456CB Cessna
172K
Fixed-wing, single engine Individual owner
Texas
Standard 2023-03-13 ValidFAA registration status code V: Valid registration. All codes
N4789E Cessna
172N
Fixed-wing, single engine Phil Weber Investments LLC
San Diego, California
Standard 2023-03-13 ValidFAA registration status code V: Valid registration. All codes
N3544P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Ohio
Standard 2023-03-12 ValidFAA registration status code V: Valid registration. All codes
N738EG Cessna
172N
Fixed-wing, single engine Jeff Air Pilot Services LLC
Shelbyville, Indiana
Standard 2023-03-12 ValidFAA registration status code V: Valid registration. All codes
N739UB Cessna
172N
Fixed-wing, single engine Flying H LLC
Lake Placid, Florida
Standard 2023-03-12 ValidFAA registration status code V: Valid registration. All codes
N1741P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Florida
Standard 2023-03-11 ValidFAA registration status code V: Valid registration. All codes
N2244V Piper
PA-28-161
Fixed-wing, single engine Southern Colorado Flight Professionals LLC
Pueblo, Colorado
Standard 2023-03-11 ValidFAA registration status code V: Valid registration. All codes
N2389W Beech
A23-19
Fixed-wing, single engine Individual owner
Kansas
Standard 2023-03-11 ValidFAA registration status code V: Valid registration. All codes
N2856H Piper
PA-28-161
Fixed-wing, single engine Flight School 101 LLC
Winter Haven, Florida
Standard 2023-03-11 ValidFAA registration status code V: Valid registration. All codes
N2876K Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Texas
Standard 2023-03-11 ValidFAA registration status code V: Valid registration. All codes
N29619 Cessna
177
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2023-03-11 ValidFAA registration status code V: Valid registration. All codes
N5027R Cessna
172M
Fixed-wing, single engine Individual owner
Puerto Rico
Standard 2023-03-11 ValidFAA registration status code V: Valid registration. All codes
N5105W Piper
PA-28
Fixed-wing, single engine Individual owner
New York
Standard 2023-03-11 ValidFAA registration status code V: Valid registration. All codes
N5407L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Texas
Standard 2023-03-11 ValidFAA registration status code V: Valid registration. All codes
N61671 Cessna
172M
Fixed-wing, single engine Charlotte Flyers INC
Fort Myers, Florida
Standard 2023-03-11 ValidFAA registration status code V: Valid registration. All codes
N6242C Piper
PA-28-161
Fixed-wing, single engine Flight School 101 LLC
Winter Haven, Florida
Standard 2023-03-11 ValidFAA registration status code V: Valid registration. All codes
N66908 Piper
PA-18-150
Fixed-wing, single engine Individual owner
South Dakota
Standard 2023-03-11 ValidFAA registration status code V: Valid registration. All codes
N80554 Cessna
172M
Fixed-wing, single engine Individual owner
Nevada
Standard 2023-03-11 ValidFAA registration status code V: Valid registration. All codes
N1213F Cessna
172N
Fixed-wing, single engine Flight Answers LLC
Miami Lakes, Florida
Standard 2023-03-10 ValidFAA registration status code V: Valid registration. All codes
N1232U Cessna
172M
Fixed-wing, single engine Organization of Black Aerospace Professionals INC
Westchester, Illinois
Standard 2023-03-10 ValidFAA registration status code V: Valid registration. All codes
N13469 Cessna
172M
Fixed-wing, single engine Angels Over Atlanta INC
Fayetteville, Georgia
Standard 2023-03-10 ValidFAA registration status code V: Valid registration. All codes
N1458P Piper
PA-23-150
Fixed-wing, multi-engine Individual owner
Wisconsin
Standard 2023-03-10 ValidFAA registration status code V: Valid registration. All codes
N16288 Piper
PA-28-140
Fixed-wing, single engine Individual owner
South Carolina
Standard 2023-03-10 ValidFAA registration status code V: Valid registration. All codes
N1923H Piper
PA-28-140
Fixed-wing, single engine Individual owner
Minnesota
Standard 2023-03-10 ValidFAA registration status code V: Valid registration. All codes
N2152J Worgull Robert C
RV-6A
Fixed-wing, single engine Individual owner
Tennessee
Experimental 2023-03-10 ValidFAA registration status code V: Valid registration. All codes
N4325J Piper
PA-28-140
Fixed-wing, single engine Jpsc LLC
College Station, Texas
Standard 2023-03-10 ValidFAA registration status code V: Valid registration. All codes
N4418Z Piper
PA-18-150
Fixed-wing, single engine High Wind Aviation Service LLC
Ludlow, Vermont
Standard 2023-03-10 ValidFAA registration status code V: Valid registration. All codes
N501AH Beech
A23-19
Fixed-wing, single engine Individual owner
North Carolina
Standard 2023-03-10 ValidFAA registration status code V: Valid registration. All codes
N5159W Piper
PA-28
Fixed-wing, single engine Individual owner
Michigan
Standard 2023-03-10 ValidFAA registration status code V: Valid registration. All codes
N5527F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2023-03-10 ValidFAA registration status code V: Valid registration. All codes
N5879L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine N5879L LLC
Lewes, Delaware
Standard 2023-03-10 ValidFAA registration status code V: Valid registration. All codes
N60RB Piper
PA-22-135
Fixed-wing, single engine Individual owner
Texas
Standard 2023-03-10 ValidFAA registration status code V: Valid registration. All codes
N73330 Cessna
172M
Fixed-wing, single engine Individual owner
Alabama
Standard 2023-03-10 ValidFAA registration status code V: Valid registration. All codes
N739ET Cessna
172N
Fixed-wing, single engine 2035 Holdings LLC
Las Vegas, Nevada
Standard 2023-03-10 ValidFAA registration status code V: Valid registration. All codes
N744M Cessna
172N
Fixed-wing, single engine Individual owner
North Carolina
Standard 2023-03-10 ValidFAA registration status code V: Valid registration. All codes
N78640 Cessna
172K
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-03-10 ValidFAA registration status code V: Valid registration. All codes
N8213C Piper
PA-28-140
Fixed-wing, single engine Faucon LLC
Tucson, Arizona
Standard 2023-03-10 ValidFAA registration status code V: Valid registration. All codes
N8282J Varga Aircraft Corp.
2150A
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2023-03-10 ValidFAA registration status code V: Valid registration. All codes
N91154 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Florida
Standard 2023-03-10 ValidFAA registration status code V: Valid registration. All codes
N97921 Cessna
172P
Fixed-wing, single engine Flywell Aviation LLC
Bowling Green, Kentucky
Standard 2023-03-10 ValidFAA registration status code V: Valid registration. All codes
N1352U Cessna
172M
Fixed-wing, single engine N19630 LLC
Fort Collins, Colorado
Standard 2023-03-09 ValidFAA registration status code V: Valid registration. All codes
N154T Piper
PA-18-105 SPECIAL
Fixed-wing, single engine Co-owned owner
Alaska
Restricted 2023-03-09 ValidFAA registration status code V: Valid registration. All codes
N172RF Cessna
172P
Fixed-wing, single engine Individual owner
New Mexico
Standard 2023-03-09 ValidFAA registration status code V: Valid registration. All codes
N2160Z Avions Pierre Robin
PIERRE ROBIN R2160
Fixed-wing, single engine Dodger Aircraft LLC
Lewes, Delaware
Standard 2023-03-09 ValidFAA registration status code V: Valid registration. All codes
N2954X Cessna
177
Fixed-wing, single engine Individual owner
Missouri
Standard 2023-03-09 ValidFAA registration status code V: Valid registration. All codes
N3411Q Piper
PA-28-161
Fixed-wing, single engine Individual owner
Louisiana
Standard 2023-03-09 ValidFAA registration status code V: Valid registration. All codes
N5821W Piper
PA-28-150
Fixed-wing, single engine Individual owner
North Dakota
Standard 2023-03-09 ValidFAA registration status code V: Valid registration. All codes
N5882U Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2023-03-09 ValidFAA registration status code V: Valid registration. All codes
N7226G Cessna
172K
Fixed-wing, single engine Individual owner
New Jersey
Standard 2023-03-09 ValidFAA registration status code V: Valid registration. All codes
N838MB Harris William F
GLASAIR RG
Fixed-wing, single engine Co-owned owner
Colorado
Standard 2023-03-09 ValidFAA registration status code V: Valid registration. All codes
N9415D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Kansas
Standard 2023-03-09 ValidFAA registration status code V: Valid registration. All codes
N9679P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-03-09 ValidFAA registration status code V: Valid registration. All codes
N2838Q Cessna
172L
Fixed-wing, single engine Adriatic Holdings LLC
Cheyenne, Wyoming
Standard 2023-03-08 ValidFAA registration status code V: Valid registration. All codes
N291JB Brannon Sidney K Jr
VANS RV-6A
Fixed-wing, single engine Individual owner
New Mexico
Experimental 2023-03-08 ValidFAA registration status code V: Valid registration. All codes
N3250Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
Utah
Standard 2023-03-08 ValidFAA registration status code V: Valid registration. All codes
N44236 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Louisiana
Standard 2023-03-08 ValidFAA registration status code V: Valid registration. All codes
N4452R Cessna
172M
Fixed-wing, single engine Zitting Fredrick J
Colorado City, Arizona
Standard 2023-03-08 ValidFAA registration status code V: Valid registration. All codes
N6364R Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
North Carolina
Standard 2023-03-08 ValidFAA registration status code V: Valid registration. All codes
N8259G Cessna
172N
Fixed-wing, single engine Individual owner
California
Standard 2023-03-08 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.