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

Lycoming R680E series

225 aircraft on the U.S. register carry a Lycoming R680E series engine, rated at about 300 horsepower. The Stinson VULTEE V-77 is the model most often fitted with it (62 aircraft). The aircraft carrying it were built between 1928 and 2000.

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 R680E series. FAA spelling: R680E SERIES.

Fitted to model families

Stinson VULTEE V-7762Boeing A75 Stearman Kaydet48Boeing E75 Stearman Kaydet13Curtiss Wright TRAVEL AIR 40007Cessna T-506Naval Aircraft Factory N36Boeing B75 Stearman Kaydet6Stinson SR-106Stinson SR-95Stinson SR-85Stinson SR-55Stinson SR-74

Stinson VULTEE V-77 · Boeing A75 Stearman Kaydet · Boeing E75 Stearman Kaydet · Curtiss Wright TRAVEL AIR 4000 · Cessna T-50 · Naval Aircraft Factory N3 · Boeing B75 Stearman Kaydet · Stinson SR-10 · Stinson SR-9 · Stinson SR-8

Where they are owner's state

Texas32Florida20California18Michigan10Illinois10Pennsylvania9Washington8Wisconsin7Missouri7Arizona7

Kind of aircraft

Piston singles212 (94%)Piston twins13 (6%)

When the aircraft were built by decade

What the FAA has certified, ordered and been told about the Lycoming R680E series the component layer

No FAA order in the current files names this engine series. Operators and repair shops have filed 1 failure report with the FAA since 1995, 1 of them in the last ten years.

Failure reports 1 since · what operators and shops told the FAA

Parts most often reported as the reports name them

Battery1

Latest reports

1997-01-17Battery: leaking

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

Stinson VULTEE V-77 62 with this engine series
Boeing A75 Stearman Kaydet 48 with this engine series
Boeing E75 Stearman Kaydet 13 with this engine series
Curtiss Wright TRAVEL AIR 4000 7 with this engine series
Cessna T-50 6 with this engine series
Naval Aircraft Factory N3 6 with this engine series
Boeing B75 Stearman Kaydet 6 with this engine series
Stinson SR-10 6 with this engine series

Where they are

Texas 32 of these aircraft
Florida 20 of these aircraft
California 18 of these aircraft
Michigan 10 of these aircraft
Illinois 10 of these aircraft

Biggest operators

Port Townsend Aero Museum 3 of these aircraft
Trissell Flying Service INC 2 of these aircraft
Hickey Aero Services LLC 2 of these aircraft

Airworthiness

Failure reports on the Lycoming R680E series 1 reports since 1995

Analytics

These connections as data: /graph/engine/lycoming-r680e-series.json · about the eFlight graph.

Aircraft newest certificates first · 225

Tail no.	Maker and model	Group	Owner and base	Certificate	Registered	Status
N55412	Boeing A75L300	Fixed-wing, single engine	Individual owner New Jersey	Standard	1988-03-08	Valid
N45146	Naval Aircraft Factory N3N-3	Fixed-wing, single engine	Individual owner Colorado	Standard	1987-06-05	Valid
N8132	Travel Air L-4000	Fixed-wing, single engine	Individual owner California	Restricted	1987-04-21	Valid
N448CM	Boeing A75N1(PT17)	Fixed-wing, single engine	Individual owner New Jersey	Standard	1986-09-16	Valid
N14154	Stinson SR-5E	Fixed-wing, single engine	Individual owner Washington	Standard	1985-07-22	Valid
N9573H	Stinson VULTEE V-77	Fixed-wing, single engine	Individual owner Texas	Standard	1984-01-20	Valid
N70012	Stinson VULTEE V-77	Fixed-wing, single engine	Military Aircraft Restoration CORP Anaheim, California	Standard	1983-06-22	Valid
N55376	Boeing A75N1(PT17)	Fixed-wing, single engine	Individual owner Mississippi	Restricted	1982-10-01	Valid
N3747M	Boeing PT-17	Fixed-wing, single engine	Individual owner Idaho	Standard	1980-01-29	Valid
N10819	Stinson JR. S	Fixed-wing, single engine	Individual owner Washington	Standard	1979-08-24	Valid
N64554	Boeing A75L3	Fixed-wing, single engine	Individual owner Wisconsin	Restricted	1978-12-12	Valid
N15173	Stinson SR-7B	Fixed-wing, single engine	Individual owner California	Standard	1978-07-14	Valid
N9844H	Boeing B75N1	Fixed-wing, single engine	Individual owner New Jersey	Restricted	1977-02-11	Valid
N69989	Stinson VULTEE V-77	Fixed-wing, single engine	Trissell Flying Service INC Clarksville, Texas	Standard	1975-10-18	Valid
N56214	Boeing PT-13B	Fixed-wing, single engine	Individual owner Nevada	Standard	1974-02-01	Valid
N36921	Stinson VULTEE V-77	Fixed-wing, single engine	Individual owner South Dakota	Standard	1973-08-30	Valid
N1371V	Boeing E75	Fixed-wing, single engine	Individual owner Florida	Restricted	1973-01-09	Valid
N17711	Waco ZGC-7	Fixed-wing, single engine	Individual owner Missouri	Standard		Pending cancellation
N231W	Stinson SM-8A	Fixed-wing, single engine	Individual owner Texas	Restricted		Pending
N3NY	Naval Aircraft Factory N3N-3	Fixed-wing, single engine	Individual owner Florida	Standard		Pending
N426W	Curtiss Wright TRAVEL AIR 4000	Fixed-wing, single engine	Individual owner Washington	Standard		Pending
N54625	Cessna T-50	Fixed-wing, multi-engine	Individual owner Michigan	None on file		Revoked
N69418	Stinson VULTEE V-77	Fixed-wing, single engine	Individual owner Michigan	Standard		Pending
N767DN	Boeing E75	Fixed-wing, single engine	Individual owner Michigan	Standard		Pending
N9088	Travel Air E-4000	Fixed-wing, single engine	Individual owner Texas	Experimental		Sale reported

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.