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
N9724P Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2018-03-19 ValidFAA registration status code V: Valid registration. All codes
N98263 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Mississippi
Standard 2018-03-19 ValidFAA registration status code V: Valid registration. All codes
N19777 Cessna
172L
Fixed-wing, single engine Rtd Aviation LLC
Hillsborough, New Jersey
Standard 2018-03-16 ValidFAA registration status code V: Valid registration. All codes
N35705 Piper
PA-28-161
Fixed-wing, single engine Paris Air INC
Vero Beach, Florida
Standard 2018-03-16 ValidFAA registration status code V: Valid registration. All codes
N172BK Cessna
172M
Fixed-wing, single engine Usaeroflight LLC
Greenville, South Carolina
Standard 2018-03-15 ValidFAA registration status code V: Valid registration. All codes
N19962 Cessna
172M
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2018-03-15 ValidFAA registration status code V: Valid registration. All codes
N4365Q Cessna
172L
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2018-03-15 ValidFAA registration status code V: Valid registration. All codes
N6211W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Virginia
Standard 2018-03-15 ValidFAA registration status code V: Valid registration. All codes
N63JD Cessna
172N
Fixed-wing, single engine Individual owner
New York
Standard 2018-03-15 ValidFAA registration status code V: Valid registration. All codes
N66836 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2018-03-15 ValidFAA registration status code V: Valid registration. All codes
N32LA Cessna
172L
Fixed-wing, single engine Circle S Aviation LLC
Starkville, Mississippi
Standard 2018-03-14 ValidFAA registration status code V: Valid registration. All codes
N49VL Srour Thrasher
GLASAIR SH 2
Fixed-wing, single engine Individual owner
Florida
Experimental 2018-03-14 ValidFAA registration status code V: Valid registration. All codes
N122SS Cessna
172M
Fixed-wing, single engine Grain Belt Aviation LLC
Malcolm, Nebraska
Standard 2018-03-13 ValidFAA registration status code V: Valid registration. All codes
N9173H Cessna
172M
Fixed-wing, single engine Smitty 172 LLC
Rockford, Michigan
Standard 2018-03-13 ValidFAA registration status code V: Valid registration. All codes
N1125C Piper
PA-20-135
Fixed-wing, single engine Individual owner
Illinois
Standard 2018-03-12 ValidFAA registration status code V: Valid registration. All codes
N20606 Cessna
172M
Fixed-wing, single engine Co-owned owner
Michigan
Standard 2018-03-12 ValidFAA registration status code V: Valid registration. All codes
N2500Z Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Florida
Standard 2018-03-12 ValidFAA registration status code V: Valid registration. All codes
N35798 Cessna
172I
Fixed-wing, single engine Big Sky Aviation LLC
Massillon, Ohio
Standard 2018-03-12 ValidFAA registration status code V: Valid registration. All codes
N52160 Cessna
172P
Fixed-wing, single engine G & M Aircraft INC
Wheat Ridge, Colorado
Standard 2018-03-12 ValidFAA registration status code V: Valid registration. All codes
N59VL Cessna
172L
Fixed-wing, single engine Kelley Aircraft LLC
Weyers Cave, Virginia
Standard 2018-03-12 ValidFAA registration status code V: Valid registration. All codes
N628TC American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
Georgia
Standard 2018-03-12 ValidFAA registration status code V: Valid registration. All codes
N995JA Cessna
172M
Fixed-wing, single engine N995Ja LLC
Ft Lauderdale, Florida
Standard 2018-03-12 ValidFAA registration status code V: Valid registration. All codes
N7208G Cessna
172K
Fixed-wing, single engine Individual owner
Georgia
Standard 2018-03-09 ValidFAA registration status code V: Valid registration. All codes
N28360 Piper
PA-28-161
Fixed-wing, single engine Albert Lea Airport INC
Albert Lea, Minnesota
Standard 2018-03-08 ValidFAA registration status code V: Valid registration. All codes
N6412W Piper
PA-28-140
Fixed-wing, single engine Flying Otter Aviation LLC
Snellville, Georgia
Standard 2018-03-08 ValidFAA registration status code V: Valid registration. All codes
N1763P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2018-03-07 ValidFAA registration status code V: Valid registration. All codes
N5716U Piper
PA-28-140
Fixed-wing, single engine Mil2Atp INC
Pikeville, North Carolina
Standard 2018-03-07 ValidFAA registration status code V: Valid registration. All codes
N10MK Russell R Elliott
BUSHMASTER
Fixed-wing, single engine Individual owner
Alaska
Experimental 2018-03-06 ValidFAA registration status code V: Valid registration. All codes
N6690J Piper
PA-28-140
Fixed-wing, single engine Individual owner
New York
Standard 2018-03-06 ValidFAA registration status code V: Valid registration. All codes
N80756 Piper
PA-28-161
Fixed-wing, single engine Co-owned owner
Texas
Standard 2018-03-06 ValidFAA registration status code V: Valid registration. All codes
N92731 Piper
PA-12
Fixed-wing, single engine Plane@Work LLC
Blaine, Minnesota
Standard 2018-03-06 ValidFAA registration status code V: Valid registration. All codes
N9LU American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
Illinois
Standard 2018-03-06 ValidFAA registration status code V: Valid registration. All codes
N4880F Cessna
172N
Fixed-wing, single engine Fkm Air Shuttle LLC
Brooklyn, New York
Standard 2018-03-05 ValidFAA registration status code V: Valid registration. All codes
N560Z Cessna
172M
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2018-03-05 ValidFAA registration status code V: Valid registration. All codes
N636RV Hasch Edward L Jr
VANS RV 6
Fixed-wing, single engine Individual owner
Virginia
Experimental 2018-03-05 ValidFAA registration status code V: Valid registration. All codes
N96567 Cessna
172P
Fixed-wing, single engine Gmt Aviation LLC
Newtown, Connecticut
Standard 2018-03-05 ValidFAA registration status code V: Valid registration. All codes
N73481 Cessna
172M
Fixed-wing, single engine N73481 LLC
Eaton, Colorado
Standard 2018-03-02 ValidFAA registration status code V: Valid registration. All codes
N79WH Hastings Walter
RV-6A
Fixed-wing, single engine Individual owner
Florida
Experimental 2018-03-02 ValidFAA registration status code V: Valid registration. All codes
N8316L Cessna
172I
Fixed-wing, single engine Individual owner
California
Standard 2018-03-02 ValidFAA registration status code V: Valid registration. All codes
N174JL Lockamy Jack L
RV-7A
Fixed-wing, single engine Co-owned owner
Arizona
Experimental 2018-03-01 ValidFAA registration status code V: Valid registration. All codes
N5820Z Piper
PA-22-108
Fixed-wing, single engine Individual owner
Michigan
Multiple 2018-03-01 ValidFAA registration status code V: Valid registration. All codes
N64YU Bruch S/Gregerson J S
RV6
Fixed-wing, single engine Cane Creek Aviation LLC
Asheville, North Carolina
Experimental 2018-03-01 ValidFAA registration status code V: Valid registration. All codes
N908AF Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2018-03-01 ValidFAA registration status code V: Valid registration. All codes
N131JD Cessna
172N
Fixed-wing, single engine Individual owner
Florida
Standard 2018-02-28 ValidFAA registration status code V: Valid registration. All codes
N2304L Beech
23
Fixed-wing, single engine Johnson Diversified LLC
East Lansing, Michigan
Standard 2018-02-28 ValidFAA registration status code V: Valid registration. All codes
N4401J Piper
PA-28-140
Fixed-wing, single engine Johary Aviation INC
Apopka, Florida
Standard 2018-02-28 ValidFAA registration status code V: Valid registration. All codes
N5532U Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Kansas
Standard 2018-02-28 ValidFAA registration status code V: Valid registration. All codes
N7623S Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Wisconsin
Multiple 2018-02-28 ValidFAA registration status code V: Valid registration. All codes
N12702 Cessna
172M
Fixed-wing, single engine Onguard Aviation LLC
Cottonwood Falls, Kansas
Standard 2018-02-27 ValidFAA registration status code V: Valid registration. All codes
N19807 Cessna
172M
Fixed-wing, single engine Individual owner
Florida
Standard 2018-02-27 ValidFAA registration status code V: Valid registration. All codes
N25117 Cessna
172L
Fixed-wing, single engine 98X LLC
Caddo Mills, Texas
Standard 2018-02-27 ValidFAA registration status code V: Valid registration. All codes
N6359C Piper
PA-28-161
Fixed-wing, single engine Ras Aviation LLC
Elyria, Ohio
Standard 2018-02-27 ValidFAA registration status code V: Valid registration. All codes
N6724L Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Restricted 2018-02-27 ValidFAA registration status code V: Valid registration. All codes
N92MM Cessna
172M
Fixed-wing, single engine Aircraft Guaranty CORP Trustee
Oklahoma City, Oklahoma
Standard 2018-02-27 ValidFAA registration status code V: Valid registration. All codes
N3464K Piper
PA-28-140
Fixed-wing, single engine Aviation Explorers Post 8000 INC
Ottawa, Kansas
Standard 2018-02-26 ValidFAA registration status code V: Valid registration. All codes
N4240Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Wyoming
Standard 2018-02-26 ValidFAA registration status code V: Valid registration. All codes
N44629 Piper
PA-28-151
Fixed-wing, single engine M & S Aviation LLC
Lebanon, Missouri
Standard 2018-02-26 ValidFAA registration status code V: Valid registration. All codes
N7325J Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Carolina
Standard 2018-02-26 ValidFAA registration status code V: Valid registration. All codes
N78606 Cessna
172K
Fixed-wing, single engine Brook Trout Properties LLC DBA
Kalamazoo, Michigan
Standard 2018-02-26 ValidFAA registration status code V: Valid registration. All codes
N9512H Cessna
172M
Fixed-wing, single engine Individual owner
North Dakota
Standard 2018-02-26 ValidFAA registration status code V: Valid registration. All codes
N4282J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
California
Standard 2018-02-23 ValidFAA registration status code V: Valid registration. All codes
N9676U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Redwood Aircraft LLC
Santa Rosa, California
Standard 2018-02-23 ValidFAA registration status code V: Valid registration. All codes
N737JM Cessna
172N
Fixed-wing, single engine Individual owner
California
Standard 2018-02-21 ValidFAA registration status code V: Valid registration. All codes
N326MM Piper
PA-28-140
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2018-02-20 ValidFAA registration status code V: Valid registration. All codes
N35349 Cessna
172I
Fixed-wing, single engine Individual owner
Indiana
Standard 2018-02-20 ValidFAA registration status code V: Valid registration. All codes
N4961Y Piper
PA-18-150
Fixed-wing, single engine Individual owner
Minnesota
Standard 2018-02-20 ValidFAA registration status code V: Valid registration. All codes
N8464D Piper
PA-18-150
Fixed-wing, single engine Withheld at owner's request
Standard 2018-02-20 ValidFAA registration status code V: Valid registration. All codes
N2571P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2018-02-16 ValidFAA registration status code V: Valid registration. All codes
N7157Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2018-02-16 ValidFAA registration status code V: Valid registration. All codes
N1445E Cessna
172N
Fixed-wing, single engine South Aero LLC
Albuquerque, New Mexico
Standard 2018-02-14 ValidFAA registration status code V: Valid registration. All codes
N4973F Cessna
172N
Fixed-wing, single engine Boraam Aviation INC
Prospect Heights, Illinois
Standard 2018-02-14 ValidFAA registration status code V: Valid registration. All codes
N5265D Cessna
172N
Fixed-wing, single engine Fly 172Rg LLC
Peoria, Arizona
Standard 2018-02-14 ValidFAA registration status code V: Valid registration. All codes
N40829 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2018-02-13 ValidFAA registration status code V: Valid registration. All codes
N80350 Cessna
172M
Fixed-wing, single engine Individual owner
Illinois
Standard 2018-02-13 ValidFAA registration status code V: Valid registration. All codes
N972FC Cessna
172N
Fixed-wing, single engine Blackhawk Holding CORP
Wilmington, Delaware
Standard 2018-02-13 ValidFAA registration status code V: Valid registration. All codes
N5711D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Missouri
Standard 2018-02-12 ValidFAA registration status code V: Valid registration. All codes
N6244W Piper
PA-28-140
Fixed-wing, single engine Taylors Turf Paradise LLC
Whitewater, Wisconsin
Standard 2018-02-12 ValidFAA registration status code V: Valid registration. All codes
N6457D Cessna
172N
Fixed-wing, single engine Tristar Aviation Services LLC
Hendersonville, Tennessee
Standard 2018-02-12 ValidFAA registration status code V: Valid registration. All codes
N15RV Crawford Larry G
RV-4
Fixed-wing, single engine Individual owner
Missouri
Experimental 2018-02-09 ValidFAA registration status code V: Valid registration. All codes
N20486 Cessna
172M
Fixed-wing, single engine Co-owned owner
California
Standard 2018-02-09 ValidFAA registration status code V: Valid registration. All codes
N2473P Piper
PA-22
Fixed-wing, single engine Individual owner
Oregon
Standard 2018-02-09 ValidFAA registration status code V: Valid registration. All codes
N51883 Cessna
172P
Fixed-wing, single engine Angel Aviation INC
Peoria, Arizona
Standard 2018-02-09 ValidFAA registration status code V: Valid registration. All codes
N177RP Cessna
177
Fixed-wing, single engine USA Premier Repair & Services INC
Sacramento, California
Standard 2018-02-08 ValidFAA registration status code V: Valid registration. All codes
N5785U Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Massachusetts
Standard 2018-02-08 ValidFAA registration status code V: Valid registration. All codes
N611DX Champion
7GCAA
Fixed-wing, single engine Withheld at owner's request
Standard 2018-02-08 ValidFAA registration status code V: Valid registration. All codes
N7669D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alaska
Standard 2018-02-08 ValidFAA registration status code V: Valid registration. All codes
N80425 Cessna
172M
Fixed-wing, single engine Individual owner
Kansas
Standard 2018-02-08 ValidFAA registration status code V: Valid registration. All codes
N32052 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2018-02-06 ValidFAA registration status code V: Valid registration. All codes
N9VV Martin John L Jr
VARIVIGGEN JM-1
Fixed-wing, single engine Aviation Museum At Garner Field INC
Uvalde, Texas
Experimental 2018-02-06 ValidFAA registration status code V: Valid registration. All codes
N12196 Cessna
172M
Fixed-wing, single engine Jdr Services LLC
West Plains, Missouri
Standard 2018-02-05 ValidFAA registration status code V: Valid registration. All codes
N4328Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2018-02-05 ValidFAA registration status code V: Valid registration. All codes
N57640 Bellanca
7GCAA
Fixed-wing, single engine Individual owner
Kentucky
Standard 2018-02-05 ValidFAA registration status code V: Valid registration. All codes
N6898H Cessna
172M
Fixed-wing, single engine S J Holding LLC
Wilmington, Delaware
Standard 2018-02-05 ValidFAA registration status code V: Valid registration. All codes
N91071 Piper
PA-28-161
Fixed-wing, single engine Warrior II LLC
Zionsville, Indiana
Standard 2018-02-05 ValidFAA registration status code V: Valid registration. All codes
N9963D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Virginia
Standard 2018-02-05 ValidFAA registration status code V: Valid registration. All codes
N1176U Cessna
172M
Fixed-wing, single engine Plane Leasing LLC
Wilmington, Delaware
Standard 2018-02-02 ValidFAA registration status code V: Valid registration. All codes
N12247 Cessna
172M
Fixed-wing, single engine Rebecca'S Wings 247 LLC
Greenville, Kentucky
Standard 2018-02-02 ValidFAA registration status code V: Valid registration. All codes
N1309U Cessna
172M
Fixed-wing, single engine 129W Holdings LLC
Terlingua, Texas
Standard 2018-02-02 ValidFAA registration status code V: Valid registration. All codes
N21JB Weller Jay Bee
STS PLYMATE SA-11-A
Fixed-wing, single engine Jvg3 INC
Orange Park, Florida
Experimental 2018-02-02 ValidFAA registration status code V: Valid registration. All codes
N3140Z Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
Kansas
Standard 2018-02-02 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.