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

Lycoming AEIO-320-E1B

6 aircraft on the U.S. register carry a Lycoming AEIO-320-E1B engine, rated at about 150 horsepower. The Bellanca 8 Decathlon and Scout is the model most often fitted with it (4 aircraft). The aircraft carrying it were built between 1975 and 2021.

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-320-E1B. FAA spelling: AEIO-320-E1B.

Fitted to model families

Bellanca 8 Decathlon and Scout4Borke Michael F RV-9A1Raymond Eaton RV-61

Bellanca 8 Decathlon and Scout · Borke Michael F RV-9A · Raymond Eaton RV-6

Where they are owner's state

Washington1Texas1South Carolina1Georgia1Florida1

Kind of aircraft

Piston singles6 (100%)

When the aircraft were built by decade

01234419701200012020

What the FAA has certified, ordered and been told about the Lycoming AEIO-320-E1B the component layer

The design is held under 1 type certificate (1E12, 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 12 failure reports with the FAA since 1995, 5 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
2012-02-242012-03-06 · Fuel servo diaphragm · engine
2012-01-252011-26-04 · Externally mounted fuel injector fuel lines · engine
2011-08-162011-15-10 · Fuel servos · engine

All orders naming the Lycoming AEIO-320-E1B

Failure reports 12 since · what operators and shops told the FAA

01223195196198199200101218322

Parts most often reported as the reports name them

Magneto2Alternator1Coil1Diaphragm1Distributor Gear1Filter1Servo Injector1Spar1Tube1

Latest reports

2022-10-13None: none
2022-03-24Distributor Gear: backed out
2022-03-01None: none
2018-09-05Tube: failed
2018-02-09Filter: fractured

Certificates and bulletins

1E12Type certificate held by Lycoming Engines · 32 models listed · revised April 4, 2018

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-320-e1b.json · about the eFlight graph.

Aircraft newest certificates first · 6

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N4775P Bellanca
8KCAB
Fixed-wing, single engine Withheld at owner's request
Standard 2026-03-25 ValidFAA registration status code V: Valid registration. All codes
N53870 Bellanca
8KCAB
Fixed-wing, single engine Individual owner
Texas
Standard 2023-08-17 ValidFAA registration status code V: Valid registration. All codes
N50450 Bellanca
8KCAB
Fixed-wing, single engine Individual owner
Georgia
Standard 2022-08-02 ValidFAA registration status code V: Valid registration. All codes
N6LV Raymond Eaton
RV-6
Fixed-wing, single engine Individual owner
Florida
Experimental 2017-12-29 ValidFAA registration status code V: Valid registration. All codes
N5061N Bellanca
8KCAB
Fixed-wing, single engine Co-owned owner
Washington
Standard 2013-07-22 ValidFAA registration status code V: Valid registration. All codes
N492JB Borke Michael F
RV-9A
Fixed-wing, single engine Individual owner
South Carolina
Experimental 2007-06-29 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.