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

Lycoming AEIO-360-B4A

5 aircraft on the U.S. register carry a Lycoming AEIO-360-B4A engine, rated at about 180 horsepower. The Aerotek PITTS SPECIAL S-1S is the model most often fitted with it (2 aircraft). The aircraft carrying it were built between 1975 and 2011.

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 AEIO-360-B4A. FAA spelling: AEIO-360-B4A.

Fitted to model families

Aerotek PITTS SPECIAL S-1S2Clute William A PITTS S-11Eberle John S PITTS SPECIAL S1S1Glanville M/Glanville E STEEN SKYBOLT1

Aerotek PITTS SPECIAL S-1S · Clute William A PITTS S-1 · Eberle John S PITTS SPECIAL S1S · Glanville M/Glanville E STEEN SKYBOLT

Where they are owner's state

Virginia1South Carolina1Nevada1Connecticut1California1

Kind of aircraft

Piston singles5 (100%)

When the aircraft were built by decade

00122219702198012010

What the FAA has certified, ordered and been told about the Lycoming AEIO-360-B4A the component layer

The design is held under 1 type certificate (1E10, held by Lycoming Engines). The FAA has issued 25 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 5 failure reports with the FAA since 1995, 2 of them in the last ten years.

FAA orders 25 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 AEIO-360-B4A

Failure reports 5 since · what operators and shops told the FAA

00122195297121125

Parts most often reported as the reports name them

Air Box1Bolt1Fuel Control1Torque Tube1Valve1

Latest reports

2025-08-01Air Box: cracked
2021-03-22Fuel Control: erratic
1997-12-17Bolt: broken
1997-05-24Torque Tube: cracked
1995-05-08Valve: nut loose

Certificates and bulletins

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

Safety bulletins 5 · 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
2008-09-10NE-06-32R1 · Reciprocating Engine - Crankshaft
2008-07-03NE-08-32 · Propeller Governor Set Screw

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
Airworthiness

These connections as data: /graph/engine/lycoming-aeio-360-b4a.json · about the eFlight graph.

Aircraft newest certificates first · 5

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N42EK Eberle John S
PITTS SPECIAL S1S
Fixed-wing, single engine Individual owner
Nevada
Experimental 2024-06-24 ValidFAA registration status code V: Valid registration. All codes
N88UM Aerotek
PITTS SPECIAL S-1S
Fixed-wing, single engine Individual owner
Virginia
Experimental 2022-09-13 ValidFAA registration status code V: Valid registration. All codes
N100MP Aerotek
PITTS SPECIAL S-1S
Fixed-wing, single engine Individual owner
Connecticut
Experimental 2018-05-11 ValidFAA registration status code V: Valid registration. All codes
N62DP Glanville M/Glanville E
STEEN SKYBOLT
Fixed-wing, single engine Individual owner
California
Experimental 2010-09-03 ValidFAA registration status code V: Valid registration. All codes
N896BC Clute William A
PITTS S-1
Fixed-wing, single engine Individual owner
South Carolina
Experimental 2009-06-02 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 5, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.