Engines · piston (reciprocating) · data as of October 5, 2026

Lycoming R680

218 aircraft on the U.S. register carry a Lycoming R680 engine, rated at about 215 horsepower. The Boeing A75 Stearman Kaydet is the model most often fitted with it (69 aircraft). The aircraft carrying it were built between 1927 and 2012.

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 R680. FAA spelling: R680.

Fitted to model families

Boeing A75 Stearman Kaydet69Boeing E75 Stearman Kaydet43Boeing B75 Stearman Kaydet17Boeing PT-139Naval Aircraft Factory N38Stinson VULTEE V-778Stinson JR. S7Stinson SM-87Stinson SR-96Curtiss Wright TRAVEL AIR 40004Curtiss Wright TRAVEL AIR E-40003Clark 10002

Boeing A75 Stearman Kaydet · Boeing E75 Stearman Kaydet · Boeing B75 Stearman Kaydet · Boeing PT-13 · Naval Aircraft Factory N3 · Stinson VULTEE V-77 · Stinson JR. S · Stinson SM-8 · Stinson SR-9 · Curtiss Wright TRAVEL AIR 4000

Where they are owner's state

California25Texas18Washington14Florida12Delaware10Oregon9Pennsylvania8Ohio8North Carolina8Minnesota6

Kind of aircraft

Piston singles215 (99%)Piston twins3 (1%)

When the aircraft were built by decade

Connections how this engine series links to the rest of the register

Fitted to

Boeing A75 Stearman Kaydet 69 with this engine series
Boeing E75 Stearman Kaydet 43 with this engine series
Boeing B75 Stearman Kaydet 17 with this engine series
Boeing PT-13 9 with this engine series
Naval Aircraft Factory N3 8 with this engine series
Stinson VULTEE V-77 8 with this engine series
Stinson JR. S 7 with this engine series
Stinson SM-8 7 with this engine series

Where they are

California 25 of these aircraft
Texas 18 of these aircraft
Washington 14 of these aircraft
Florida 12 of these aircraft
Delaware 10 of these aircraft

Biggest operators

Southern Aircraft Consultancy INC Trustee 3 of these aircraft
Plane Fun INC Tr Trustee 3 of these aircraft
Western Antique Aeroplane & Automobile Museum 2 of these aircraft
Skyhaven Airport INC 2 of these aircraft
Simply Living LLC 2 of these aircraft

Analytics

These connections as data: /graph/engine/lycoming-r680.json · about the eFlight graph.

Aircraft newest certificates first · 218

Tail no.	Maker and model	Group	Owner and base	Certificate	Registered	Status
N18442	Stinson SR-9C	Fixed-wing, single engine	Simply Living LLC Fort Myers, Florida	Standard	2018-10-09	Valid
N5810V	Boeing E75	Fixed-wing, single engine	Tuskegee Airmen National Historical Museum Detroit, Michigan	Standard	2018-08-16	Valid
N16142	Stinson SR-8C	Fixed-wing, single engine	Co-owned owner California	Standard	2018-08-03	Valid
N73373	Stinson VULTEE V-77	Fixed-wing, single engine	Individual owner Colorado	Standard	2018-07-10	Valid
N4284L	Boeing PT-13D	Fixed-wing, single engine	Co-owned owner Texas	Standard	2018-06-14	Valid
N23KF	Boeing E75	Fixed-wing, single engine	Individual owner Ohio	Experimental	2018-05-24	Valid
N795H	Stearman Aircraft 6L	Fixed-wing, single engine	Individual owner California	Standard	2018-05-23	Valid
N28700	Spartan NP-1	Fixed-wing, single engine	Tulsa Air and Space Museum INC Tulsa, Oklahoma	Experimental	2018-04-23	Valid
N411M	Stinson SM-8A	Fixed-wing, single engine	Western Antique Aeroplane & Automobile Museum Hood River, Oregon	Standard	2018-04-20	Valid
N58975	Boeing E75	Fixed-wing, single engine	Individual owner Washington	Standard	2018-04-13	Valid
N1720B	Boeing B75N1	Fixed-wing, single engine	Individual owner Kentucky	Standard	2018-04-04	Valid
N61268	Boeing A75N1(PT17)	Fixed-wing, single engine	Individual owner California	Standard	2018-03-29	Valid
N65051	Boeing A75N1(PT17)	Fixed-wing, single engine	Cloud Nine Aviation LLP Concord, Ohio	Standard	2018-03-08	Valid
N350GW	Grumman G-44A	Fixed-wing, multi-engine	Dalks Leasing INC Wilmington, Delaware	Standard	2018-03-07	Valid
N45018	Naval Aircraft Factory N3N-3	Fixed-wing, single engine	Individual owner North Carolina	Standard	2018-03-05	Valid
N1423M	Boeing A75N1(PT17)	Fixed-wing, single engine	Individual owner Mississippi	Standard	2018-01-30	Valid
N4408N	Boeing B75N1	Fixed-wing, single engine	Leatherheads LLC Greer, South Carolina	Standard	2017-11-20	Valid
N51281	Boeing A75N1(PT17)	Fixed-wing, single engine	Individual owner New York	Standard	2017-09-13	Valid
N5187N	Boeing E75	Fixed-wing, single engine	Adair Aviation LLC Broken Arrow, Oklahoma	Standard	2017-06-06	Valid
N3840K	Boeing E75N1	Fixed-wing, single engine	Individual owner North Carolina	Standard	2017-02-16	Valid
N6085	Curtiss Wright TRAVEL AIR 4000	Fixed-wing, single engine	Old Sport Aviation LLC Ranger, Texas	Standard	2017-01-31	Valid
N68488	Boeing B75	Fixed-wing, single engine	Tomeny Aero INC Florence, Oregon	Standard	2016-11-07	Valid
N16635	Boeing E75N1	Fixed-wing, single engine	Jeepers LLC New York, New York	Standard	2016-10-07	Valid
N469RH	Boeing A75N1(PT17)	Fixed-wing, single engine	Individual owner New Hampshire	Standard	2016-10-04	Valid
N443G	Stinson JR. S	Fixed-wing, single engine	Co-owned owner Minnesota	Standard	2016-08-30	Valid
N9055H	Boeing E75	Fixed-wing, single engine	Individual owner Florida	Standard	2016-08-01	Valid
N65052	Boeing A75L300	Fixed-wing, single engine	L&L Sales INC Sandusky, Ohio	Standard	2016-07-12	Valid
N817FK	Stinson VULTEE V-77	Fixed-wing, single engine	Simply Living LLC Fort Myers, Florida	Standard	2016-06-10	Valid
N75JZ	Boeing A75	Fixed-wing, single engine	Acv Group LLC Mckinleyville, California	Standard	2016-03-09	Valid
N8528N	Boeing E75	Fixed-wing, single engine	Individual owner Oregon	Standard	2015-09-14	Valid
N60216	Boeing A75	Fixed-wing, single engine	Co-owned owner North Carolina	Standard	2015-08-04	Valid
N66CV	Naval Aircraft Factory N3N-3	Fixed-wing, single engine	Individual owner Indiana	Standard	2015-07-22	Valid
N5819V	Boeing B75N1	Fixed-wing, single engine	Individual owner Florida	Standard	2015-03-12	Valid
N12143	Stinson JR. S	Fixed-wing, single engine	Arkansas Air and Military Museum INC Fayetteville, Arkansas	Standard	2015-01-12	Valid
N5433	Travel Air 4000	Fixed-wing, single engine	David Lee Bradley Productions INC Temecula, California	Standard	2014-08-12	Valid
N441GH	Boeing A75N1(PT17)	Fixed-wing, single engine	441Gh LLC Arcola, Texas	Standard	2014-08-07	Valid
N941W	Stinson SM-8A	Fixed-wing, single engine	Co-owned owner North Carolina	Standard	2014-07-15	Valid
N5815V	Boeing B75N1	Fixed-wing, single engine	Co-owned owner Idaho	Standard	2014-06-13	Valid
N925W	Stinson SM-8A	Fixed-wing, single engine	Individual owner Michigan	Standard	2014-03-14	Valid
N1363V	Boeing E75	Fixed-wing, single engine	Lil Dawg Aviation LLC Wilmington, Delaware	Standard	2013-12-30	Valid
N53231	Boeing A75N1(PT17)	Fixed-wing, single engine	Lil Dawg Aviation LLC Wilmington, Delaware	Standard	2013-09-25	Valid
N67454	Boeing A75N1(PT17)	Fixed-wing, single engine	Co-owned owner Tennessee	Standard	2013-08-15	Valid
N645H	Curtiss Wright TRAVEL AIR E-4000	Fixed-wing, single engine	Chileprop LLC Mimbres, New Mexico	Standard	2013-08-14	Valid
N33162	Boeing A75N1(PT17)	Fixed-wing, single engine	Plane Fun INC Tr Trustee Snellville, Georgia	Standard	2013-06-26	Valid
N56226	Boeing A75L3	Fixed-wing, single engine	Individual owner Texas	Standard	2013-06-10	Valid
N2388	Boeing E75	Fixed-wing, single engine	Individual owner California	Standard	2013-05-14	Valid
N57120	Boeing A75N1(PT17)	Fixed-wing, single engine	Individual owner Washington	Restricted	2013-04-09	Valid
N57929	Boeing A75	Fixed-wing, single engine	Co-owned owner North Carolina	Standard	2013-02-28	Valid
N2073	Ryan M-1	Fixed-wing, single engine	Co-owned owner Missouri	Experimental	2012-12-27	Valid
N12817	Paulson Jeffrey E STINSON MODEL O	Fixed-wing, single engine	Museum of Flight Foundation Seattle, Washington	Experimental	2012-12-05	Valid
N5913	Stinson SR-10J	Fixed-wing, single engine	Skyhaven Airport INC Tunkhannock, Pennsylvania	None on file	2012-04-23	Valid
N18408	Stinson SR-9C	Fixed-wing, single engine	Individual owner Ohio	Standard	2012-02-16	Valid
N55575	Boeing A75N1(PT17)	Fixed-wing, single engine	Co-owned owner California	Standard	2012-02-16	Valid
N12165	Stinson JR. S	Fixed-wing, single engine	Airpower Museum INC Ottumwa, Iowa	Standard	2012-01-04	Valid
N9TB	Boeing E75	Fixed-wing, single engine	Individual owner Pennsylvania	Standard	2011-12-19	Valid
N44963	Naval Aircraft Factory N3N-3	Fixed-wing, single engine	Co-owned owner Michigan	Standard	2011-09-13	Valid
N68722	Boeing A75N1(PT17)	Fixed-wing, single engine	Stearman722 LLC Soddy Daisy, Tennessee	Standard	2011-07-21	Valid
N52951	Boeing E75	Fixed-wing, single engine	Individual owner Georgia	Standard	2011-03-30	Valid
N57941	Boeing E75N1	Fixed-wing, single engine	Metropolitan Registered Pharmacists INC Bethalto, Illinois	Standard	2010-09-15	Valid
N68985	Boeing E75	Fixed-wing, single engine	Individual owner Pennsylvania	Standard	2010-06-23	Valid
N75668	Boeing E75N1	Fixed-wing, single engine	Co-owned owner New Jersey	Standard	2010-06-10	Valid
N17195	Stinson SR-9C	Fixed-wing, single engine	Co-owned owner Texas	Standard	2009-09-17	Valid
N9184H	Stinson VULTEE V-77	Fixed-wing, single engine	Individual owner Minnesota	Standard	2009-04-13	Valid
N57761	Boeing A75L300	Fixed-wing, single engine	Air Giblinski LLC Sedgwick, Kansas	Standard	2009-01-15	Valid
N65369	Boeing B75N1	Fixed-wing, single engine	Individual owner Oregon	Standard	2009-01-13	Valid
N9017R	Clark 12	Fixed-wing, single engine	Individual owner Virginia	Restricted	2008-12-22	Valid
N805RB	Boeing PT-17	Fixed-wing, single engine	North Valley Aircraft INC Valley City, North Dakota	Standard	2008-11-05	Valid
N4968V	Boeing E75N1	Fixed-wing, single engine	Individual owner Texas	Standard	2008-09-23	Valid
N2JS	Boeing/Stiles R B75N1	Fixed-wing, single engine	Individual owner	Standard	2008-02-27	Reports overdue
N571Y	Stearman Aircraft 70	Fixed-wing, single engine	Western Antique Aeroplane & Automobile Museum Hood River, Oregon	Standard	2008-02-05	Valid
N49256	Boeing A75N1(PT17)	Fixed-wing, single engine	Bais Donald H College Place, Washington	Standard	2008-01-24	Valid
N97X	Boeing A75N1(PT17)	Fixed-wing, single engine	Aerospace Trust Management LLC Trustee Wilmington, Delaware	Standard	2007-11-30	Valid
N75359	Boeing A75N1(PT17)	Fixed-wing, single engine	Tennessee Flying Machines LLC Nashville, Tennessee	Standard	2007-11-06	Valid
N5282	Curtiss Wright TRAVEL AIR 4000	Fixed-wing, single engine	Individual owner Oregon	Restricted	2007-10-22	Valid
N111CN	Boeing A75L300	Fixed-wing, single engine	Individual owner Colorado	Standard	2006-07-21	Valid
N9118H	Stinson VULTEE V-77	Fixed-wing, single engine	Individual owner Minnesota	Standard	2006-01-05	Valid
N63027	Boeing B75	Fixed-wing, single engine	Individual owner Indiana	Standard	2005-12-14	Valid
N1357N	Boeing A75N1(PT17)	Fixed-wing, single engine	Individual owner West Virginia	Standard	2005-10-26	Valid
N10883	Stinson JR. S	Fixed-wing, single engine	Individual owner Georgia	Standard	2005-06-20	Valid
N14GC	Boeing B75N1	Fixed-wing, single engine	JR Stearman LLC Fairfield, California	Standard	2005-01-28	Valid
N53466	Boeing A75L3	Fixed-wing, single engine	Individual owner Washington	Standard	2004-12-22	Valid
N45035	Naval Aircraft Factory N3N-3	Fixed-wing, single engine	Knutson Family Limited Partnership 2 Chetek, Wisconsin	Multiple	2003-07-29	Valid
N3992B	Boeing PT-13D	Fixed-wing, single engine	Individual owner Texas	Standard	2003-03-03	Valid
N78854	Clark 1000	Fixed-wing, single engine	Bygone Era Lines Los Lunas, New Mexico	Experimental	2002-09-25	Valid
N661MP	Boeing A75N1(PT17)	Fixed-wing, single engine	Individual owner Arkansas	Standard	2002-05-06	Valid
N75631	Boeing A75N1(PT17)	Fixed-wing, single engine	Individual owner Texas	Standard	2002-04-27	Valid
N67196	Boeing 75	Fixed-wing, single engine	Newman Bradley W Tiffin, Ohio	Standard	2001-11-29	Valid
N75MW	Boeing E75(N2S-5)	Fixed-wing, single engine	Individual owner Pennsylvania	Standard	2001-07-20	Valid
N11170	Stinson SM-6000-B	Fixed-wing, multi-engine	Individual owner Florida	Standard	1999-09-10	Valid
N9958	Curtiss Wright TRAVEL AIR E-4000	Fixed-wing, single engine	Co-owned owner Minnesota	Standard	1999-08-02	Valid
N9722Z	Boeing E75	Fixed-wing, single engine	Individual owner California	Standard	1999-07-07	Valid
N680HW	Boeing A75L300	Fixed-wing, single engine	Omega 1 CORP Middletown, Delaware	Standard	1999-04-13	Valid
N65695	Boeing E75	Fixed-wing, single engine	Heritage Flight Museum Burlington, Washington	Standard	1999-04-02	Valid
N11178	Stinson SM-8A	Fixed-wing, single engine	Individual owner Ohio	Standard	1998-04-20	Valid
N38957	Boeing A75L300	Fixed-wing, single engine	Individual owner Kansas	Restricted	1996-11-04	Valid
N10886	Stinson JR. S	Fixed-wing, single engine	Individual owner Ohio	Standard	1995-09-08	Valid
N55570	Boeing A75N1(PT17)	Fixed-wing, single engine	Individual owner Washington	Standard	1995-02-15	Valid
N65900	Boeing E75N1	Fixed-wing, single engine	Co-owned owner Washington	Standard	1995-02-15	Valid
N265RM	Boeing A75N1(PT17)	Fixed-wing, single engine	Individual owner Oklahoma	Standard	1994-09-26	Valid
N8515Z	Boeing A75	Fixed-wing, single engine	Kendall Investment CORP Three Lakes, Wisconsin	Standard	1993-04-19	Valid

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.