The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 5, 2026

Lycoming IO-360-A3B6

5 aircraft on the U.S. register carry a Lycoming IO-360-A3B6 engine, rated at about 200 horsepower. The Mooney M-20 is the model most often fitted with it (4 aircraft). The aircraft carrying it were built between 1979 and 2022.

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-360-A3B6. FAA spelling: IO-360-A3B6.

Fitted to model families

Mooney M-204Snader Kirk W RV-71

Mooney M-20 · Snader Kirk W RV-7

Where they are owner's state

Wyoming1Texas1Oregon1Georgia1Florida1

Kind of aircraft

Piston singles5 (100%)

When the aircraft were built by decade

00122119702198012020

What the FAA has certified, ordered and been told about the Lycoming IO-360-A3B6 the component layer

The design is held under 1 type certificate (1E10, held by Lycoming Engines). The FAA has issued 27 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 67 failure reports with the FAA since 1995, 4 of them in the last ten years.

FAA orders 27 airworthiness directives · newest first

2026-04-082026-04-11 · Engine (Reciprocating) · engine
2024-12-052024-21-02 · Engine (Reciprocating) · engine
2015-11-032015-19-07 · Fuel injector fuel lines · engine
2012-10-242012-19-01 · Crankshafts · engine
2012-02-242012-03-06 · Fuel servo diaphragm · engine
2012-01-252011-26-04 · Externally mounted fuel injector fuel lines · engine

All orders naming the Lycoming IO-360-A3B6

Failure reports 67 since · what operators and shops told the FAA

03681195000524326

Parts most often reported as the reports name them

Magneto6Cylinder5Valve3Bushing2Cable2Circuit Breaker2Contact Assy2Exhaust Valve2Ident Plate2O-Ring2

Latest reports

2026-08-24Door: broken
2026-04-20Intake Valve: broken
2026-03-10Coil: arced
2024-08-01Fuel Line: broken
2015-08-12Actuator: broken

Certificates and bulletins

1E10Type certificate held by Lycoming Engines · 89 models listed · revised May 4, 2020

Safety bulletins 6 · 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
Where they are
Biggest operators
Airworthiness

These connections as data: /graph/engine/lycoming-io-360-a3b6.json · about the eFlight graph.

Aircraft newest certificates first · 5

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N4722P Mooney
M20J
Fixed-wing, single engine Eac Property Management LLC
Atlanta, Georgia
Standard 2023-08-18 ValidFAA registration status code V: Valid registration. All codes
N69LN Mooney
M20J
Fixed-wing, single engine Valiair Limited CO Trustee
Casper, Wyoming
Standard 2022-01-24 ValidFAA registration status code V: Valid registration. All codes
N368KA Snader Kirk W
RV-7
Fixed-wing, single engine Individual owner
Florida
Experimental 2021-11-01 ValidFAA registration status code V: Valid registration. All codes
N1169N Mooney
M20J
Fixed-wing, single engine 69 November LLC
Driftwood, Texas
Standard 2001-08-29 ValidFAA registration status code V: Valid registration. All codes
N5272K Mooney
M20J
Fixed-wing, single engine Garmin International INC
Salem, Oregon
Experimental 1994-01-27 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 5, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.