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

Lycoming O-360-A4G

2 aircraft on the U.S. register carry a Lycoming O-360-A4G engine, rated at about 180 horsepower. The Bland Milton D RV7A is the model most often fitted with it (1 aircraft). The aircraft carrying it were built between 2013 and 2019.

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-360-A4G. FAA spelling: O-360-A4G.

Fitted to model families

Bland Milton D RV7A1Charles T Smith TR-41

Bland Milton D RV7A · Charles T Smith TR-4

Where they are owner's state

Texas2

Kind of aircraft

Piston singles2 (100%)

When the aircraft were built by decade

0012222010

What the FAA has certified, ordered and been told about the Lycoming O-360-A4G the component layer

The design is held under 1 type certificate (E-286, held by Lycoming Engines). The FAA has issued 18 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 3 failure reports with the FAA since 1995, 3 of them in the last ten years.

FAA orders 18 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
2012-10-242012-19-01 · Crankshafts · engine
2012-03-272012-03-07 · Carburetor · engine
2008-10-202008-19-05 · Parallel Valve'' reciprocating engines · engine

All orders naming the Lycoming O-360-A4G

Failure reports 3 since · what operators and shops told the FAA

00011103106108

Parts most often reported as the reports name them

Duct1Hose1Rotor1

Latest reports

2008-01-12Hose: leaking
2006-11-08Duct: corroded
2003-08-08Rotor: failed

Certificates and bulletins

E-286Type certificate held by Lycoming Engines · 72 models listed · revised April 30, 2013

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

Where they are
  • Texas 2 of these aircraft
Airworthiness

These connections as data: /graph/engine/lycoming-o-360-a4g.json · about the eFlight graph.

Aircraft newest certificates first · 2

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N37MZ Bland Milton D
RV7A
Fixed-wing, single engine Co-owned owner
Texas
Experimental 2022-08-12 ValidFAA registration status code V: Valid registration. All codes
N781SF Charles T Smith
TR-4
Fixed-wing, single engine Individual owner
Texas
Experimental 2018-02-08 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 5, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.