Lycoming IO-320 series
1,707 aircraft on the U.S. register carry a Lycoming IO-320 series engine, rated at about 150 horsepower. The Piper PA-30 Twin Comanche is the model most often fitted with it (808 aircraft). The aircraft carrying it were built between 1956 and 2025.
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 IO-320 series. FAA spelling: IO-320 SERIES.
Fitted to model families
Piper PA-30 Twin Comanche808Bellanca 7 Citabria185Champion 7 Citabria and Champ135Bellanca 8 Decathlon and Scout124Piper PA-39 Twin Comanche C/R68Cessna 172 Skyhawk26Piper PA-28 Cherokee, Warrior, Archer and Arrow15Piper PA-18 Super Cub8Piper PA-22 Tri-Pacer and Colt4Pitts Special S-13Beechcraft D952Cessna 177 Cardinal2
Piper PA-30 Twin Comanche · Bellanca 7 Citabria · Champion 7 Citabria and Champ · Bellanca 8 Decathlon and Scout · Piper PA-39 Twin Comanche C/R · Cessna 172 Skyhawk · Piper PA-28 Cherokee, Warrior, Archer and Arrow · Piper PA-18 Super Cub · Piper PA-22 Tri-Pacer and Colt · Pitts Special S-1
Where they are owner's state
Texas153Florida146California144Georgia71Delaware59Washington54Illinois52Alabama49Michigan48Ohio46
Kind of aircraft
Piston twins882 (52%)Piston singles824 (48%)Gliders1 (0.1%)
When the aircraft were built by decade
What the FAA has certified, ordered and been told about the Lycoming IO-320 series the component layer
The design is held under 1 type certificate (1E12, held by Lycoming Engines). The FAA has issued 30 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 43 failure reports with the FAA since 1995, 8 of them in the last ten years.
FAA orders 30 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
2012-02-242012-03-06 · Fuel servo diaphragm · engine
2011-08-162011-15-10 · Fuel servos · engine
2009-02-092009-02-03 · Fuel injection servos · engine
Failure reports 43 since · what operators and shops told the FAA
Parts most often reported as the reports name them
Bolt12Spar5Carburetor2Servo2B-Nut1Bearing1Blade1Bulkhead1Capacitor1Commutator1
Latest reports
2025-06-30Impulse Coupling: destroyed
2023-12-09Hose Connector: disconnected
2022-11-02Bearing: worn
2022-02-24Carburetor: leaking
2021-04-30Exhaust Pipe: cracked
Certificates and bulletins
1E12Type certificate held by Lycoming Engines · 32 models listed · revised April 4, 2018
Safety bulletins 9 · 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,...
2008-09-10NE-06-32R1 · Reciprocating Engine - Crankshaft
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
- Piper PA-30 Twin Comanche 808 with this engine series
- Bellanca 7 Citabria 185 with this engine series
- Champion 7 Citabria and Champ 135 with this engine series
- Bellanca 8 Decathlon and Scout 124 with this engine series
- Piper PA-39 Twin Comanche C/R 68 with this engine series
- Cessna 172 Skyhawk 26 with this engine series
- Piper PA-28 Cherokee, Warrior, Archer and Arrow 15 with this engine series
- Piper PA-18 Super Cub 8 with this engine series
Where they are
- Texas 153 of these aircraft
- Florida 146 of these aircraft
- California 144 of these aircraft
- Georgia 71 of these aircraft
- Delaware 59 of these aircraft
Biggest operators
- Southern Aircraft Consultancy INC Trustee 9 of these aircraft
- International Air Services INC Trustee 7 of these aircraft
- Plane Fun INC Tr Trustee 4 of these aircraft
- Collum Aviation LLC 4 of these aircraft
- Bas Part Sales LLC 4 of these aircraft
Airworthiness
- FAA orders naming the Lycoming IO-320 series 30 airworthiness directives
- Failure reports on the Lycoming IO-320 series 43 reports since 1995
Analytics
These connections as data: /graph/engine/lycoming-io-320-series.json · about the eFlight graph.
Aircraft newest certificates first · 1,707
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N390W | Piper PA-39 |
Fixed-wing, multi-engine | Individual owner Wisconsin |
Standard | 1992-10-01 | ValidFAA registration status code V: Valid registration. All codes |
| N88188 | Bellanca 7KCAB |
Fixed-wing, single engine | Blair Keeley A Erie, Colorado |
Standard | 1992-05-07 | ValidFAA registration status code V: Valid registration. All codes |
| N524FL | Piper PA-28-140 |
Fixed-wing, single engine | Individual owner Texas |
Standard | 1992-03-31 | ValidFAA registration status code V: Valid registration. All codes |
| N7632S | Bellanca 7KCAB |
Fixed-wing, single engine | Individual owner Texas |
Standard | 1992-03-09 | ValidFAA registration status code V: Valid registration. All codes |
| N8864Y | Piper PA-39 |
Fixed-wing, multi-engine | Individual owner Virginia |
Standard | 1991-09-20 | ValidFAA registration status code V: Valid registration. All codes |
| N7997Y | Piper PA-30 |
Fixed-wing, multi-engine | N7997Y INC Miami, Florida |
Standard | 1991-08-16 | ValidFAA registration status code V: Valid registration. All codes |
| N626NR | Piper PA-39 |
Fixed-wing, multi-engine | Co-owned owner Maryland |
Standard | 1991-03-12 | ValidFAA registration status code V: Valid registration. All codes |
| N8000 | Piper PA-30 |
Fixed-wing, multi-engine | Individual owner Pennsylvania |
Standard | 1991-02-14 | ValidFAA registration status code V: Valid registration. All codes |
| N8564Y | Piper PA-30 |
Fixed-wing, multi-engine | Gingers Holdings INC Jacksonville, Florida |
Standard | 1991-02-12 | ValidFAA registration status code V: Valid registration. All codes |
| N10HN | Bellanca 7KCAB |
Fixed-wing, single engine | Individual owner California |
Standard | 1991-01-11 | ValidFAA registration status code V: Valid registration. All codes |
| N7929Y | Piper PA-30 |
Fixed-wing, multi-engine | Individual owner Ohio |
Standard | 1990-10-22 | ValidFAA registration status code V: Valid registration. All codes |
| N7551Y | Piper PA-30 |
Fixed-wing, multi-engine | Individual owner Texas |
Standard | 1990-08-09 | ValidFAA registration status code V: Valid registration. All codes |
| N333HY | Piper PA-30 |
Fixed-wing, multi-engine | Co-owned owner Georgia |
Standard | 1990-06-20 | ValidFAA registration status code V: Valid registration. All codes |
| N7226Y | Piper PA-30 |
Fixed-wing, multi-engine | Individual owner Florida |
Standard | 1990-06-14 | ValidFAA registration status code V: Valid registration. All codes |
| N8503Y | Piper PA-30 |
Fixed-wing, multi-engine | Roberti John O Barre, Vermont |
Standard | 1990-06-06 | ValidFAA registration status code V: Valid registration. All codes |
| N53909 | Bellanca 8KCAB |
Fixed-wing, single engine | Co-owned owner Illinois |
Standard | 1990-04-05 | ValidFAA registration status code V: Valid registration. All codes |
| N2591H | Piper PA-18-150 |
Fixed-wing, single engine | Individual owner Nebraska |
Standard | 1990-03-15 | ValidFAA registration status code V: Valid registration. All codes |
| N53906 | Bellanca 7KCAB |
Fixed-wing, single engine | Individual owner Georgia |
Standard | 1989-11-28 | ValidFAA registration status code V: Valid registration. All codes |
| N989LB | Benishek Lowell SH-2R |
Fixed-wing, single engine | Individual owner Colorado |
Experimental | 1989-09-12 | ValidFAA registration status code V: Valid registration. All codes |
| N89SK | Kuenzi Steve CASSUTT III M |
Fixed-wing, single engine | Individual owner New Mexico |
Experimental | 1989-08-04 | ValidFAA registration status code V: Valid registration. All codes |
| N9129L | Champion 7KCAB |
Fixed-wing, single engine | Osi Flyers INC Oak Ridge, Tennessee |
Standard | 1989-07-24 | ValidFAA registration status code V: Valid registration. All codes |
| N9178L | Bellanca 8KCAB |
Fixed-wing, single engine | Individual owner Missouri |
Standard | 1989-07-22 | ValidFAA registration status code V: Valid registration. All codes |
| N8710Y | Piper PA-30 |
Fixed-wing, multi-engine | Individual owner Georgia |
Standard | 1989-02-11 | ValidFAA registration status code V: Valid registration. All codes |
| N5229X | Champion 7KCAB |
Fixed-wing, single engine | G B Acro INC Grandville, Michigan |
Standard | 1988-08-09 | ValidFAA registration status code V: Valid registration. All codes |
| N3205B | Piper PA-22-135 |
Fixed-wing, single engine | Individual owner Ohio |
Standard | 1988-07-25 | ValidFAA registration status code V: Valid registration. All codes |
| N316DB | Shane Douglas B SHANE RUNABOUT |
Fixed-wing, single engine | Individual owner California |
Experimental | 1988-06-23 | ValidFAA registration status code V: Valid registration. All codes |
| N8324Y | Piper PA-30 |
Fixed-wing, multi-engine | Individual owner Georgia |
Standard | 1988-05-26 | ValidFAA registration status code V: Valid registration. All codes |
| N8095Y | Piper PA-30 |
Fixed-wing, multi-engine | N8095Y INC Oakdale, Minnesota |
Standard | 1988-02-16 | ValidFAA registration status code V: Valid registration. All codes |
| N57394 | Bellanca 8KCAB |
Fixed-wing, single engine | Co-owned owner Colorado |
Standard | 1988-01-08 | ValidFAA registration status code V: Valid registration. All codes |
| N6345N | Champion 7KCAB |
Fixed-wing, single engine | Co-owned owner Georgia |
Multiple | 1987-12-14 | ValidFAA registration status code V: Valid registration. All codes |
| N7856Y | Piper PA-30 |
Fixed-wing, multi-engine | Eastern Technical CORP Martinsburg, West Virginia |
Standard | 1987-12-08 | ValidFAA registration status code V: Valid registration. All codes |
| N115RS | Stahla Ronald A SEA HAWKER |
Fixed-wing, single engine | Individual owner Nebraska |
Experimental | 1987-11-02 | ValidFAA registration status code V: Valid registration. All codes |
| N68AH | Piper PA-30 |
Fixed-wing, multi-engine | 740 Assoc INC Wilmington, Delaware |
Standard | 1987-09-30 | ValidFAA registration status code V: Valid registration. All codes |
| N7683S | Bellanca 8KCAB |
Fixed-wing, single engine | Individual owner Virginia |
Standard | 1987-09-30 | ValidFAA registration status code V: Valid registration. All codes |
| N8468Y | Piper PA-30 |
Fixed-wing, multi-engine | Individual owner Texas |
Standard | 1987-01-31 | ValidFAA registration status code V: Valid registration. All codes |
| N57503 | Bellanca 8KCAB |
Fixed-wing, single engine | Individual owner Tennessee |
Standard | 1986-09-15 | ValidFAA registration status code V: Valid registration. All codes |
| N7439Y | Piper PA-30 |
Fixed-wing, multi-engine | Individual owner Washington |
Standard | 1986-09-15 | ValidFAA registration status code V: Valid registration. All codes |
| N5199X | Champion 7KCAB |
Fixed-wing, single engine | Individual owner California |
Standard | 1986-09-09 | ValidFAA registration status code V: Valid registration. All codes |
| N8385Y | Piper PA-30 |
Fixed-wing, multi-engine | Individual owner Oregon |
Standard | 1986-06-11 | ValidFAA registration status code V: Valid registration. All codes |
| N8021Y | Piper PA-30 |
Fixed-wing, multi-engine | Sterling Investment Services INC Batavia, Illinois |
Standard | 1986-06-04 | ValidFAA registration status code V: Valid registration. All codes |
| N1020H | Piper PA-30 |
Fixed-wing, multi-engine | Hw Barnhouse INC Vero Beach, Florida |
Standard | 1986-03-24 | ValidFAA registration status code V: Valid registration. All codes |
| N727RM | Piper PA-30 |
Fixed-wing, multi-engine | Individual owner Pennsylvania |
Standard | 1985-12-17 | ValidFAA registration status code V: Valid registration. All codes |
| N7121Y | Piper PA-30 |
Fixed-wing, multi-engine | Individual owner Texas |
Standard | 1985-05-17 | ValidFAA registration status code V: Valid registration. All codes |
| N88428 | Bellanca 8KCAB |
Fixed-wing, single engine | Individual owner Ohio |
Standard | 1985-01-07 | ValidFAA registration status code V: Valid registration. All codes |
| N57WC | Carter PITTS SPECIAL S-1 |
Fixed-wing, single engine | Individual owner Georgia |
Experimental | 1984-07-19 | ValidFAA registration status code V: Valid registration. All codes |
| N8112Y | Piper PA-30 |
Fixed-wing, multi-engine | Individual owner Texas |
Standard | 1983-09-01 | ValidFAA registration status code V: Valid registration. All codes |
| N8742V | Bellanca 7KCAB |
Fixed-wing, single engine | Individual owner New York |
Standard | 1983-06-16 | ValidFAA registration status code V: Valid registration. All codes |
| N8759V | Bellanca 8KCAB |
Fixed-wing, single engine | Individual owner Illinois |
Standard | 1983-05-05 | ValidFAA registration status code V: Valid registration. All codes |
| N21FT | Bellanca 8KCAB |
Fixed-wing, single engine | Individual owner Ohio |
Standard | 1982-12-06 | ValidFAA registration status code V: Valid registration. All codes |
| N5BY | Piper PA-30 |
Fixed-wing, multi-engine | Individual owner Arizona |
Standard | 1982-11-30 | ValidFAA registration status code V: Valid registration. All codes |
| N348PV | Vollheim Peter M GLASAIR |
Fixed-wing, single engine | Individual owner New Hampshire |
Experimental | 1982-10-28 | ValidFAA registration status code V: Valid registration. All codes |
| N8888N | Champion 7KCAB |
Fixed-wing, single engine | Individual owner New Jersey |
Standard | 1982-09-21 | ValidFAA registration status code V: Valid registration. All codes |
| N78238 | Globe GC-1B |
Fixed-wing, single engine | Individual owner Washington |
Standard | 1982-07-21 | ValidFAA registration status code V: Valid registration. All codes |
| N8800Y | Piper PA-30 |
Fixed-wing, multi-engine | Alexander City Aviation CORP Alexander City, Alabama |
Standard | 1982-04-07 | ValidFAA registration status code V: Valid registration. All codes |
| N8206Y | Piper PA-30 |
Fixed-wing, multi-engine | Bauer Electric INC Winona, Minnesota |
Standard | 1982-02-03 | ValidFAA registration status code V: Valid registration. All codes |
| N36035 | Bellanca 8KCAB |
Fixed-wing, single engine | Individual owner North Dakota |
Standard | 1981-10-20 | ValidFAA registration status code V: Valid registration. All codes |
| N57435 | Bellanca 7KCAB |
Fixed-wing, single engine | Individual owner Ohio |
Standard | 1981-10-08 | ValidFAA registration status code V: Valid registration. All codes |
| N7561F | Champion 7KCAB |
Fixed-wing, single engine | Individual owner North Carolina |
Standard | 1981-08-18 | ValidFAA registration status code V: Valid registration. All codes |
| N53896 | Bellanca 7KCAB |
Fixed-wing, single engine | Co-owned owner Florida |
Standard | 1980-10-09 | ValidFAA registration status code V: Valid registration. All codes |
| N36414 | Bellanca 7KCAB |
Fixed-wing, single engine | Individual owner California |
Standard | 1979-07-24 | ValidFAA registration status code V: Valid registration. All codes |
| N8452Y | Piper PA-30 |
Fixed-wing, multi-engine | Individual owner Virginia |
Standard | 1979-07-10 | ValidFAA registration status code V: Valid registration. All codes |
| N56BG | Guernsey G R MUSTANG-II |
Fixed-wing, single engine | Individual owner New Mexico |
Experimental | 1979-05-16 | ValidFAA registration status code V: Valid registration. All codes |
| N5551K | Bellanca 8KCAB |
Fixed-wing, single engine | Individual owner Florida |
Standard | 1979-05-02 | ValidFAA registration status code V: Valid registration. All codes |
| N77SL | Piper PA-30 |
Fixed-wing, multi-engine | Sanders Wiley C JR Troy, Alabama |
Standard | 1978-05-26 | ValidFAA registration status code V: Valid registration. All codes |
| N114SC | Christiansen-Robert BERYL CP-750 |
Fixed-wing, single engine | Individual owner South Dakota |
Experimental | 1978-05-18 | ValidFAA registration status code V: Valid registration. All codes |
| N8804 | Bellanca 8KCAB |
Fixed-wing, single engine | Co-owned owner Louisiana |
Standard | 1977-10-25 | ValidFAA registration status code V: Valid registration. All codes |
| N37960 | Buth STARDUSTER SA300 |
Fixed-wing, single engine | Individual owner Texas |
Experimental | 1977-10-03 | ValidFAA registration status code V: Valid registration. All codes |
| N7167Y | Piper PA-30 |
Fixed-wing, multi-engine | Individual owner West Virginia |
Standard | 1977-07-22 | ValidFAA registration status code V: Valid registration. All codes |
| N8725Y | Piper PA-30 |
Fixed-wing, multi-engine | Individual owner Mississippi |
Standard | 1976-09-23 | ValidFAA registration status code V: Valid registration. All codes |
| N57K | Klein PITTS SPECIAL S-1 |
Fixed-wing, single engine | Individual owner Florida |
Experimental | 1976-04-07 | ValidFAA registration status code V: Valid registration. All codes |
| N7500F | Champion 7KCAB |
Fixed-wing, single engine | Individual owner New York |
Standard | 1975-03-21 | ValidFAA registration status code V: Valid registration. All codes |
| N209WA | Messerschmitt-Bolkow-Blohm BO 209 MONSUN |
Fixed-wing, single engine | Individual owner Florida |
Standard | 1973-05-04 | ValidFAA registration status code V: Valid registration. All codes |
| N2839G | Champion 7KCAB |
Fixed-wing, single engine | Individual owner Connecticut |
Standard | 1970-05-20 | ValidFAA registration status code V: Valid registration. All codes |
| N5276X | Champion 7KCAB |
Fixed-wing, single engine | Individual owner Missouri |
Standard | 1970-03-05 | ValidFAA registration status code V: Valid registration. All codes |
| N101VA | Velocity Inc VELOCITY |
Fixed-wing, single engine | Individual owner Texas |
Experimental | Pending cancellationFAA registration status code 19: Registration pending, pending cancellation. All codes | |
| N150SP | Patriot Aircraft Llc CX1900A |
Fixed-wing, single engine | Individual owner Colorado |
Experimental | Sale reportedFAA registration status code 7. All codes | |
| N163RD | Beizer David R RV-6A |
Glider | Individual owner Mississippi |
Experimental | PendingFAA registration status code R: Registration pending. All codes | |
| N21PA | Piper PA-30 |
Fixed-wing, multi-engine | Hensley Aviation LLC Telford, Tennessee |
Standard | ValidFAA registration status code V: Valid registration. All codes | |
| N23162 | Cessna 150H |
Fixed-wing, single engine | Individual owner Arizona |
Standard | PendingFAA registration status code R: Registration pending. All codes | |
| N33SS | Piper PA-30 |
Fixed-wing, multi-engine | Individual owner California |
Standard | PendingFAA registration status code R: Registration pending. All codes | |
| N369WB | Sellers-Gillespie PITTS SPECIAL |
Fixed-wing, single engine | Individual owner Tennessee |
Experimental | Sale reportedFAA registration status code 7. All codes | |
| N373SE | Elfrink Lindell H THORP T-18 |
Fixed-wing, single engine | Individual owner Arizona |
Experimental | PendingFAA registration status code R: Registration pending. All codes | |
| N40DA | Piper PA-30 |
Fixed-wing, multi-engine | Cirrus Design CORP Duluth, Minnesota |
Standard | Valid (manufacturer)FAA registration status code M: Valid, assigned to the manufacturer under its dealer certificate. All codes | |
| N505G | Piper PA-30 |
Fixed-wing, multi-engine | Individual owner Georgia |
Standard | RevokedFAA registration status code 9: Registration certificate revoked. All codes | |
| N56506 | Piper PA-28-140 |
Fixed-wing, single engine | Individual owner Mississippi |
Standard | Sale reportedFAA registration status code 7. All codes | |
| N567TC | Piper PA-39 |
Fixed-wing, multi-engine | Individual owner Wisconsin |
Standard | PendingFAA registration status code R: Registration pending. All codes | |
| N64YB | Piper PA-30 |
Fixed-wing, multi-engine | Individual owner Alaska |
Standard | PendingFAA registration status code R: Registration pending. All codes | |
| N7087Y | Piper PA-30 |
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 | |
| N7188Y | Piper PA-30 |
Fixed-wing, multi-engine | Individual owner U.S. Virgin Islands |
Standard | PendingFAA registration status code R: Registration pending. All codes | |
| N7318Y | Piper PA-30 |
Fixed-wing, multi-engine | Bas Part Sales LLC Greeley, Colorado |
Standard | ValidFAA registration status code V: Valid registration. All codes | |
| N73RZ | Dinkins/Ward GLASAIR RG |
Fixed-wing, single engine | Bas Part Sales LLC Greeley, Colorado |
Experimental | ValidFAA registration status code V: Valid registration. All codes | |
| N7431Y | Piper PA-30 |
Fixed-wing, multi-engine | Individual owner Virginia |
Standard | PendingFAA registration status code R: Registration pending. All codes | |
| N7473Y | Piper PA-30 |
Fixed-wing, multi-engine | Individual owner Alaska |
Standard | Sale reportedFAA registration status code 7. All codes | |
| N750HK | Piper PA-30 |
Fixed-wing, multi-engine | Individual owner Florida |
Standard | PendingFAA registration status code R: Registration pending. All codes | |
| N7697Y | Piper PA-30 |
Fixed-wing, multi-engine | Individual owner California |
Standard | CanceledFAA registration status code 20: Registration pending, canceled. All codes | |
| N76KF | Bellanca 8KCAB |
Fixed-wing, single engine | Individual owner Mississippi |
Standard | PendingFAA registration status code R: Registration pending. All codes | |
| N7835Y | Piper PA-30 |
Fixed-wing, multi-engine | Individual owner Delaware |
Standard | PendingFAA registration status code R: Registration pending. All codes | |
| N7971Y | Piper PA-30 |
Fixed-wing, multi-engine | Individual owner Tennessee |
Standard | PendingFAA registration status code R: Registration pending. All codes | |
| N7986Y | Piper PA-30 |
Fixed-wing, multi-engine | Individual owner South Dakota |
Standard | PendingFAA registration status code R: Registration pending. All codes | |
| N7JE | Piper PA-30 |
Fixed-wing, multi-engine | Individual owner Missouri |
Standard | Sale reportedFAA registration status code 7. All codes |
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.