The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 7, 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

These connections as data: /graph/engine/lycoming-o-320-series.json · about the eFlight graph.

Aircraft newest certificates first · 27,315

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N1896J Piper
PA-28-140
Fixed-wing, single engine Western Edge Aviation LLC
Dickinson, North Dakota
Standard 2025-04-03 ValidFAA registration status code V: Valid registration. All codes
N2152Z Piper
PA-28-161
Fixed-wing, single engine N2152Z LLC
Middletown, Delaware
Standard 2025-04-03 ValidFAA registration status code V: Valid registration. All codes
N221PJ Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
South Carolina
Standard 2025-04-03 ValidFAA registration status code V: Valid registration. All codes
N2947P Piper
PA-22-150
Fixed-wing, single engine White Hat Repair LLC
Greenleaf, Idaho
Standard 2025-04-03 ValidFAA registration status code V: Valid registration. All codes
N307R Galati Rick A
RV-6A
Fixed-wing, single engine T-Tailers LLC
Kalispell, Montana
Experimental 2025-04-03 ValidFAA registration status code V: Valid registration. All codes
N40CZ Canedy Clark
COZY MK IV
Fixed-wing, single engine Beast Aero Consulting and Training LLC
Rosamond, California
Experimental 2025-04-03 ValidFAA registration status code V: Valid registration. All codes
N5073H Cessna
172M
Fixed-wing, single engine Elite Planes LLC
Menifee, California
Standard 2025-04-03 ValidFAA registration status code V: Valid registration. All codes
N516JT Trotter John
RV6-A
Fixed-wing, single engine Individual owner
Texas
Experimental 2025-04-03 ValidFAA registration status code V: Valid registration. All codes
N52408 Cessna
172P
Fixed-wing, single engine Individual owner
Indiana
Standard 2025-04-03 ValidFAA registration status code V: Valid registration. All codes
N57532 Piper
PA-18-150
Fixed-wing, single engine N57532 LLC
Wasilla, Alaska
Standard 2025-04-03 ValidFAA registration status code V: Valid registration. All codes
N64203 Cessna
172M
Fixed-wing, single engine Individual owner
Ohio
Standard 2025-04-03 ValidFAA registration status code V: Valid registration. All codes
N7110Q Cessna
172L
Fixed-wing, single engine Co-owned owner
Kansas
Standard 2025-04-03 ValidFAA registration status code V: Valid registration. All codes
N84408 Cessna
172K
Fixed-wing, single engine Co-owned owner
California
Standard 2025-04-03 ValidFAA registration status code V: Valid registration. All codes
N115AE Stahl Everett D
PITTS SPECIAL S-1
Fixed-wing, single engine Individual owner
New York
Experimental 2025-04-02 ValidFAA registration status code V: Valid registration. All codes
N3176P Piper
PA-23-150
Fixed-wing, multi-engine N3176P LLC
Titusville, Florida
Standard 2025-04-02 ValidFAA registration status code V: Valid registration. All codes
N5256D Cessna
172N
Fixed-wing, single engine Tall Timber Flying Service LLC
Kalispell, Montana
Standard 2025-04-02 ValidFAA registration status code V: Valid registration. All codes
N7542R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Nebraska
Standard 2025-04-02 ValidFAA registration status code V: Valid registration. All codes
N87057 Bellanca
7GCBC
Fixed-wing, single engine Zero Five Seven LLC
Fargo, North Dakota
Standard 2025-04-02 ValidFAA registration status code V: Valid registration. All codes
N9644C Aero Commander
100
Fixed-wing, single engine Co-owned owner
Iowa
Standard 2025-04-02 ValidFAA registration status code V: Valid registration. All codes
N13593 Cessna
172M
Fixed-wing, single engine Absolute Altitude LLC
Murrieta, California
Standard 2025-04-01 ValidFAA registration status code V: Valid registration. All codes
N3321L Ward Richard S
RV-4
Fixed-wing, single engine N3321L LLC
Dacula, Georgia
Experimental 2025-04-01 ValidFAA registration status code V: Valid registration. All codes
N4335Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Wyoming
Standard 2025-04-01 ValidFAA registration status code V: Valid registration. All codes
N43745 Piper
PA-28-161
Fixed-wing, single engine Individual owner
South Dakota
Standard 2025-04-01 ValidFAA registration status code V: Valid registration. All codes
N472AC American Champion Aircraft
7GCAA
Fixed-wing, single engine Swift Air LLC
Lebanon, Tennessee
Standard 2025-04-01 ValidFAA registration status code V: Valid registration. All codes
N7105L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Florida
Standard 2025-04-01 ValidFAA registration status code V: Valid registration. All codes
N7301J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2025-04-01 ValidFAA registration status code V: Valid registration. All codes
N7308G Cessna
172K
Fixed-wing, single engine Orlandi Properties LLC
Blairstown, New Jersey
Standard 2025-04-01 ValidFAA registration status code V: Valid registration. All codes
N8368L Cessna
172I
Fixed-wing, single engine Meltzair LLC
Fryeburg, Maine
Standard 2025-04-01 ValidFAA registration status code V: Valid registration. All codes
N90FR Cessna
172N
Fixed-wing, single engine Tvpx Aircraft Solutions INC Trustee
North Salt Lake, Utah
Restricted 2025-04-01 ValidFAA registration status code V: Valid registration. All codes
N1479E Cessna
172N
Fixed-wing, single engine Aero Capital Lending LLC
Miami, Florida
Standard 2025-03-31 ValidFAA registration status code V: Valid registration. All codes
N172LN Cessna
172P
Fixed-wing, single engine Fly Aviation CORP
Wilmington, Delaware
Standard 2025-03-31 ValidFAA registration status code V: Valid registration. All codes
N2981E Cessna
172N
Fixed-wing, single engine Individual owner
Tennessee
Standard 2025-03-31 ValidFAA registration status code V: Valid registration. All codes
N322DW David Wiedwald
VAN RV-3B
Fixed-wing, single engine Individual owner
New Jersey
Experimental 2025-03-31 ValidFAA registration status code V: Valid registration. All codes
N433PC Piper
PA-18A 150
Fixed-wing, single engine Co-owned owner
Wyoming
Standard 2025-03-31 ValidFAA registration status code V: Valid registration. All codes
N5185D Cessna
172N
Fixed-wing, single engine Co-owned owner
Michigan
Standard 2025-03-31 ValidFAA registration status code V: Valid registration. All codes
N57634 Bellanca
7GCBC
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2025-03-31 ValidFAA registration status code V: Valid registration. All codes
N690B Piper
PA-23
Fixed-wing, multi-engine Lincwings Society LLC
Austin, Texas
Standard 2025-03-31 ValidFAA registration status code V: Valid registration. All codes
N7112R Piper
PA-28-140
Fixed-wing, single engine Marshall Air LLC
Bellevue, Michigan
Standard 2025-03-31 ValidFAA registration status code V: Valid registration. All codes
N1864J Piper
PA-28-140
Fixed-wing, single engine Base 2 Final Aviation LLC
Princeton, Texas
Standard 2025-03-29 ValidFAA registration status code V: Valid registration. All codes
N11YS Cessna
150H
Fixed-wing, single engine Bonanza N5745V LLC
Colorado Springs, Colorado
Standard 2025-03-28 ValidFAA registration status code V: Valid registration. All codes
N172RR Cessna
172M
Fixed-wing, single engine Co-owned owner
Massachusetts
Standard 2025-03-28 ValidFAA registration status code V: Valid registration. All codes
N626NJ Piper
PA-28-151
Fixed-wing, single engine Cohesive Aviation LLC
Gilford, New Hampshire
Standard 2025-03-28 ValidFAA registration status code V: Valid registration. All codes
N64962 Cessna
172P
Fixed-wing, single engine Wingsleasing LLC
Wichita, Kansas
Standard 2025-03-28 ValidFAA registration status code V: Valid registration. All codes
N7145R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-03-28 ValidFAA registration status code V: Valid registration. All codes
N733XN Cessna
172N
Fixed-wing, single engine Flyn Go LLC
Spring, Texas
Standard 2025-03-28 ValidFAA registration status code V: Valid registration. All codes
N84721 Cessna
172K
Fixed-wing, single engine Tail Aero CORP
Wilmington, Delaware
Standard 2025-03-28 ValidFAA registration status code V: Valid registration. All codes
N130RN Walters Leonard W
RV-6
Fixed-wing, single engine Individual owner
Arizona
Experimental 2025-03-27 ValidFAA registration status code V: Valid registration. All codes
N130TH Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Maine
Standard 2025-03-27 ValidFAA registration status code V: Valid registration. All codes
N38549 Piper
PA-28-161
Fixed-wing, single engine Cohesive Aviation LLC
Gilford, New Hampshire
Standard 2025-03-27 ValidFAA registration status code V: Valid registration. All codes
N3944K Piper
PA-28-140
Fixed-wing, single engine Individual owner
South Dakota
Standard 2025-03-27 ValidFAA registration status code V: Valid registration. All codes
N52FK Fuller Craig C
RV 4
Fixed-wing, single engine Sixgun Aviation LLC
Eddyville, Kentucky
Experimental 2025-03-27 ValidFAA registration status code V: Valid registration. All codes
N6513W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2025-03-27 ValidFAA registration status code V: Valid registration. All codes
N739YW Cessna
172N
Fixed-wing, single engine Co-owned owner
Kentucky
Multiple 2025-03-27 ValidFAA registration status code V: Valid registration. All codes
N75555 Cessna
172N
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2025-03-27 ValidFAA registration status code V: Valid registration. All codes
N7721G Cessna
172L
Fixed-wing, single engine Wurtsboro Airpark LLC
Wurtsboro, New York
Standard 2025-03-27 ValidFAA registration status code V: Valid registration. All codes
N79042 Cessna
172K
Fixed-wing, single engine N79042 LLC
Rock Hill, South Carolina
Standard 2025-03-27 ValidFAA registration status code V: Valid registration. All codes
N8071Y Piper
PA-28-161
Fixed-wing, single engine Frost Aviation Services INC
Las Cruces, New Mexico
Standard 2025-03-27 ValidFAA registration status code V: Valid registration. All codes
N828Y Cessna
172N
Fixed-wing, single engine Long Island Aviators LLC
Seaford, New York
Standard 2025-03-27 ValidFAA registration status code V: Valid registration. All codes
N8351L Cessna
172I
Fixed-wing, single engine Plane Junkies LLC
Dover, Delaware
Standard 2025-03-27 ValidFAA registration status code V: Valid registration. All codes
N85AL Donald R Lee
PA-18-18
Fixed-wing, single engine Individual owner
Alaska
Experimental 2025-03-27 ValidFAA registration status code V: Valid registration. All codes
N168DD Davenport David Hollon
DAVENPORT RV-6
Fixed-wing, single engine Indian Beach Aviation LLC
Clayton, North Carolina
Experimental 2025-03-26 ValidFAA registration status code V: Valid registration. All codes
N2664K Silvaire
LUSCOMBE 8E
Fixed-wing, single engine Individual owner
Idaho
Standard 2025-03-26 ValidFAA registration status code V: Valid registration. All codes
N2726P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-03-26 ValidFAA registration status code V: Valid registration. All codes
N37790 Macallister Richard H
BAKENG DUECE
Fixed-wing, single engine Individual owner
Kentucky
Experimental 2025-03-26 ValidFAA registration status code V: Valid registration. All codes
N62984 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2025-03-26 ValidFAA registration status code V: Valid registration. All codes
N101LJ Cessna
172M
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-03-25 ValidFAA registration status code V: Valid registration. All codes
N1439X Piper
PA-28-140
Fixed-wing, single engine Dovy Aviation LLC
Houston, Texas
Standard 2025-03-25 ValidFAA registration status code V: Valid registration. All codes
N183RL Cessna
172M
Fixed-wing, single engine Je Air LLC
Bayamon, Puerto Rico
Standard 2025-03-25 ValidFAA registration status code V: Valid registration. All codes
N1949P Cessna
172M
Fixed-wing, single engine East Bay Trading CO LLC
Fairview, Pennsylvania
Standard 2025-03-25 ValidFAA registration status code V: Valid registration. All codes
N19752 Cessna
172L
Fixed-wing, single engine Individual owner
Oregon
Standard 2025-03-25 ValidFAA registration status code V: Valid registration. All codes
N19996 Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2025-03-25 ValidFAA registration status code V: Valid registration. All codes
N378VS Sarles Chanler W
BUSHBY MUSTANG II
Fixed-wing, single engine Individual owner
California
Experimental 2025-03-25 ValidFAA registration status code V: Valid registration. All codes
N5071W Piper
PA-28-150
Fixed-wing, single engine Individual owner
North Carolina
Standard 2025-03-25 ValidFAA registration status code V: Valid registration. All codes
N64509 Cessna
172M
Fixed-wing, single engine Co-owned owner
Florida
Standard 2025-03-25 ValidFAA registration status code V: Valid registration. All codes
N7027D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-03-25 ValidFAA registration status code V: Valid registration. All codes
N9909Q Cessna
172M
Fixed-wing, single engine Ck Aviation LLC
Charlestown, Indiana
Standard 2025-03-25 ValidFAA registration status code V: Valid registration. All codes
N191DK Monterosso Richard S
SH-2-TD
Fixed-wing, single engine Adriatic Holdings LLC
Cheyenne, Wyoming
Experimental 2025-03-24 ValidFAA registration status code V: Valid registration. All codes
N35362 Cessna
172I
Fixed-wing, single engine Individual owner
Ohio
Standard 2025-03-24 ValidFAA registration status code V: Valid registration. All codes
N51222 Cessna
172P
Fixed-wing, single engine Mbk Leasing and Consulting LLC
Lakeland, Florida
Standard 2025-03-24 ValidFAA registration status code V: Valid registration. All codes
N6545D Cessna
172N
Fixed-wing, single engine Costa Flying Service INC
Painted Post, New York
Standard 2025-03-24 ValidFAA registration status code V: Valid registration. All codes
N6987Z Williams Jesse Gray
RV-6A
Fixed-wing, single engine Individual owner
Georgia
Experimental 2025-03-24 ValidFAA registration status code V: Valid registration. All codes
N7212J Piper
PA-28-140
Fixed-wing, single engine F7 Aviation LLC
Kalispell, Montana
Standard 2025-03-24 ValidFAA registration status code V: Valid registration. All codes
N737CH Cessna
172N
Fixed-wing, single engine Charlie Lima 1 LLC
Jacksonville, Florida
Standard 2025-03-24 ValidFAA registration status code V: Valid registration. All codes
N1249U Cessna
172M
Fixed-wing, single engine Jeffries Holdings LLC
Bargersville, Indiana
Standard 2025-03-23 ValidFAA registration status code V: Valid registration. All codes
N7487R Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Dakota
Standard 2025-03-23 ValidFAA registration status code V: Valid registration. All codes
N739NP Cessna
172N
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2025-03-22 ValidFAA registration status code V: Valid registration. All codes
N9396D Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2025-03-22 ValidFAA registration status code V: Valid registration. All codes
N1355R Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Fly Guys LLC
Arcata, California
Standard 2025-03-21 ValidFAA registration status code V: Valid registration. All codes
N1749V Cessna
172M
Fixed-wing, single engine Individual owner
Ohio
Standard 2025-03-21 ValidFAA registration status code V: Valid registration. All codes
N1812 Pitts Special
SC-1
Fixed-wing, single engine Individual owner
District of Columbia
Experimental 2025-03-21 ValidFAA registration status code V: Valid registration. All codes
N26778 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine N26778 LLC
Santa Monica, California
Standard 2025-03-21 ValidFAA registration status code V: Valid registration. All codes
N47473 Piper
PA-28-161
Fixed-wing, single engine Tsk Aviation LLC
Paducah, Kentucky
Standard 2025-03-21 ValidFAA registration status code V: Valid registration. All codes
N4947G Cessna
172N
Fixed-wing, single engine Riya Aviation LLC
Tracy, California
Standard 2025-03-21 ValidFAA registration status code V: Valid registration. All codes
N5590F Piper
PA-28-140
Fixed-wing, single engine Lee A Archer JR Red Tail Youth Flying Progrom INC
New Windsor, New York
Standard 2025-03-21 ValidFAA registration status code V: Valid registration. All codes
N6382D Cessna
172N
Fixed-wing, single engine Socal Aviation INC
Eastvale, California
Standard 2025-03-21 ValidFAA registration status code V: Valid registration. All codes
N7842D Piper
PA-22-150
Fixed-wing, single engine Individual owner
New York
Standard 2025-03-21 ValidFAA registration status code V: Valid registration. All codes
N15327 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Illinois
Standard 2025-03-20 ValidFAA registration status code V: Valid registration. All codes
N22061 Piper
PA-28-161
Fixed-wing, single engine Happy Trails Flighttraining & Charters LLC
Helena, Montana
Standard 2025-03-20 ValidFAA registration status code V: Valid registration. All codes
N4014P Piper
PA-23-160
Fixed-wing, multi-engine Griffing Flying Service INC
Port Clinton, Ohio
Standard 2025-03-20 ValidFAA registration status code V: Valid registration. All codes
N5383D Cessna
172N
Fixed-wing, single engine Tong Sheng Aviation LLC
Irvine, California
Standard 2025-03-20 ValidFAA registration status code V: Valid registration. All codes
Previous Page 31 of 200 Next

Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 7, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.