Engines · piston (reciprocating) · data as of October 7, 2026

Franklin 2A4 series

35 aircraft on the U.S. register carry a Franklin 2A4 series engine, rated at about 49 horsepower. The Bellanca 7 Citabria is the model most often fitted with it (31 aircraft). The aircraft carrying it were built between 1971 and 1999.

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 Franklin 2A4 series. FAA spelling: 2A4 SERIES.

Fitted to model families

Bellanca 7 Citabria31Champion 7 Citabria and Champ1Jodel D-91Rutan VARIEZE1Wiley Dennis C 2/3 JENNY1

Bellanca 7 Citabria · Champion 7 Citabria and Champ · Jodel D-9 · Rutan VARIEZE · Wiley Dennis C 2/3 JENNY

Where they are owner's state

California4Texas3Arkansas3South Carolina2Ohio2New York2Indiana2Georgia2Arizona2Alaska2

Kind of aircraft

Piston singles35 (100%)

When the aircraft were built by decade

What the FAA has certified, ordered and been told about the Franklin 2A4 series the component layer

The design is held under 2 type certificates. No FAA order in the current files names this engine series.

Certificates and bulletins

E24EAType certificate held by Franklin Sp. Z.O.O. · 4 models listed · revised April 30, 2013

TC 240Type certificate held by Franklin Engine Company · 2 models listed

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

Bellanca 7 Citabria 31 with this engine series
Champion 7 Citabria and Champ 1 with this engine series

Where they are

California 4 of these aircraft
Texas 3 of these aircraft
Arkansas 3 of these aircraft
South Carolina 2 of these aircraft
Ohio 2 of these aircraft

Biggest operators

Eaa Aviation Foundation INC 1 of these aircraft
Brothers Aviation LLC 1 of these aircraft

Analytics

These connections as data: /graph/engine/franklin-2a4-series.json · about the eFlight graph.

Aircraft newest certificates first · 35

Tail no.	Maker and model	Group	Owner and base	Certificate	Registered	Status
N9176L	Bellanca 7ACA	Fixed-wing, single engine	Individual owner Georgia	Standard	2026-09-20	Valid
N9180L	Bellanca 7ACA	Fixed-wing, single engine	Co-owned owner Kentucky	Standard	2026-01-08	Valid
N88EV	Bellanca 7ACA	Fixed-wing, single engine	Individual owner Ohio	Standard	2025-10-06	Valid
N9139L	Bellanca 7ACA	Fixed-wing, single engine	Co-owned owner Illinois	Standard	2025-06-25	Valid
N10983	Bellanca 7ACA	Fixed-wing, single engine	Individual owner New York	Standard	2024-11-05	Valid
N31290	Bellanca 7ACA	Fixed-wing, single engine	Individual owner Arizona	Standard	2024-07-19	Valid
N9135L	Bellanca 7ACA	Fixed-wing, single engine	Co-owned owner Alaska	Standard	2024-04-15	Valid
N9190L	Bellanca 7ACA	Fixed-wing, single engine	Individual owner South Carolina	Standard	2023-10-11	Valid
N68538	Bellanca 7ACA	Fixed-wing, single engine	Individual owner Ohio	Standard	2023-08-30	Valid
N9177K	Bellanca 7ACA	Fixed-wing, single engine	Individual owner California	Standard	2023-05-01	Valid
N9199L	Bellanca 7ACA	Fixed-wing, single engine	Individual owner Michigan	Standard	2022-12-19	Valid
N9150L	Bellanca 7ACA	Fixed-wing, single engine	Individual owner Minnesota	Standard	2022-05-10	Valid
N10985	Bellanca 7ACA	Fixed-wing, single engine	Individual owner New York	Standard	2022-03-22	Valid
N9189L	Bellanca 7ACA	Fixed-wing, single engine	Individual owner Alabama	Standard	2020-09-25	Valid
N12205	Bellanca 7ACA	Fixed-wing, single engine	Individual owner Alaska	Standard	2019-02-21	Valid
N9142L	Bellanca 7ACA	Fixed-wing, single engine	Individual owner South Carolina	Standard	2018-12-26	Valid
N62965	Bellanca 7ACA	Fixed-wing, single engine	Individual owner Iowa	Standard	2018-06-18	Valid
N9175L	Bellanca 7ACA	Fixed-wing, single engine	Individual owner Missouri	Standard	2018-03-14	Valid
N9161L	Bellanca 7ACA	Fixed-wing, single engine	Bredlow Farming CO INC England, Arkansas	Standard	2016-09-20	Valid
N68529	Bellanca 7ACA	Fixed-wing, single engine	Jcads INC Tampa, Florida	Standard	2016-07-20	Valid
N9156L	Bellanca 7ACA	Fixed-wing, single engine	Individual owner California	Standard	2013-09-04	Valid
N9162L	Bellanca 7ACA	Fixed-wing, single engine	Individual owner Arkansas	Standard	2010-10-06	Valid
N68516	Bellanca 7ACA	Fixed-wing, single engine	Brothers Aviation LLC Black Rock, Arkansas	Standard	2009-08-06	Valid
N31270	Bellanca 7ACA	Fixed-wing, single engine	Individual owner California	Standard	2005-10-31	Valid
N9163L	Bellanca 7ACA	Fixed-wing, single engine	Individual owner Arizona	Standard	2003-04-29	Valid
N4995	Champion 7CCM	Fixed-wing, single engine	Co-owned owner California	Standard	2003-01-17	Valid
N1919W	Wiley Dennis C 2/3 JENNY	Fixed-wing, single engine	Individual owner Idaho	Experimental	1999-05-26	Valid
N8861	Bellanca 7ACA	Fixed-wing, single engine	Individual owner Indiana	Standard	1996-05-10	Valid
N9155L	Bellanca 7ACA	Fixed-wing, single engine	Individual owner Texas	Standard	1996-05-04	Valid
N9164L	Bellanca 7ACA	Fixed-wing, single engine	Individual owner Georgia	Standard	1996-03-26	Valid
N7742	Jodel D-9	Fixed-wing, single engine	Individual owner Indiana	Experimental	1986-10-28	Valid
N90979	Bellanca 7ACA	Fixed-wing, single engine	Individual owner Nevada	Standard	1986-03-05	Valid
N9133L	Bellanca 7ACA	Fixed-wing, single engine	Individual owner Texas	Standard	1984-10-18	Valid
N7EZ	Rutan VARIEZE	Fixed-wing, single engine	Eaa Aviation Foundation INC Oshkosh, Wisconsin	Experimental	1983-08-03	Valid
N9181L	Bellanca 7ACA	Fixed-wing, single engine	Individual owner Texas	Standard	1981-10-29	Valid

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.