Lycoming R680E3B
13 aircraft on the U.S. register carry a Lycoming R680E3B engine, rated at about 300 horsepower. The Boeing A75 Stearman Kaydet is the model most often fitted with it (6 aircraft). The aircraft carrying it were built between 1929 and 1945.
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 R680E3B. FAA spelling: R680E3B.
Fitted to model families
Boeing A75 Stearman Kaydet · Boeing B75 Stearman Kaydet · Boeing E75 Stearman Kaydet · Naval Aircraft Factory N3 · Travel Air D-4-D
Where they are owner's state
Kind of aircraft
When the aircraft were built by decade
What the FAA has certified, ordered and been told about the Lycoming R680E3B the component layer
The design is held under 1 type certificate (E-202, held by Textron Lycoming Avco Corporation). The FAA has issued 5 airworthiness directives (orders that owners must comply with) that name this engine series.
FAA orders 5 airworthiness directives · newest first
Certificates and bulletins
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
- Boeing A75 Stearman Kaydet 6 with this engine series
- Boeing B75 Stearman Kaydet 3 with this engine series
- Boeing E75 Stearman Kaydet 2 with this engine series
- Naval Aircraft Factory N3 1 with this engine series
- North Carolina 3 of these aircraft
- Washington 2 of these aircraft
- Texas 2 of these aircraft
- Utah 1 of these aircraft
- New York 1 of these aircraft
- 3G Classic Aviation INC 1 of these aircraft
- FAA orders naming the Lycoming R680E3B 5 airworthiness directives
These connections as data: /graph/engine/lycoming-r680e3b.json · about the eFlight graph.
Aircraft newest certificates first · 13
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N65502 | Boeing A75N1(PT17) |
Fixed-wing, single engine | Individual owner Illinois |
Experimental | 2026-08-31 | ValidFAA registration status code V: Valid registration. All codes |
| N472N | Travel Air D-4-D |
Fixed-wing, single engine | Individual owner California |
Standard | 2024-04-18 | ValidFAA registration status code V: Valid registration. All codes |
| N1053M | Boeing A75L300 |
Fixed-wing, single engine | Individual owner New York |
Standard | 2023-07-21 | ValidFAA registration status code V: Valid registration. All codes |
| N15LZ | Boeing A75N1(PT17) |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2023-04-21 | ValidFAA registration status code V: Valid registration. All codes |
| N9300H | Boeing E75N1 |
Fixed-wing, single engine | Individual owner Minnesota |
Standard | 2022-11-24 | ValidFAA registration status code V: Valid registration. All codes |
| N7995 | Boeing B75N1 |
Fixed-wing, single engine | Sg Squadron LLC Park City, Utah |
Standard | 2019-06-10 | ValidFAA registration status code V: Valid registration. All codes |
| N5123N | Boeing B75N1 |
Fixed-wing, single engine | Co-owned owner North Carolina |
Standard | 2018-03-15 | ValidFAA registration status code V: Valid registration. All codes |
| N53406 | Boeing A75L300 |
Fixed-wing, single engine | Individual owner Washington |
Standard | 2017-07-19 | ValidFAA registration status code V: Valid registration. All codes |
| N44821 | Naval Aircraft Factory N3N-3 |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2017-01-10 | ValidFAA registration status code V: Valid registration. All codes |
| N5323N | Boeing E75 |
Fixed-wing, single engine | 3G Classic Aviation INC Wilmington, Delaware |
Standard | 2015-03-26 | ValidFAA registration status code V: Valid registration. All codes |
| N62201 | Boeing A75L300 |
Fixed-wing, single engine | Individual owner North Carolina |
Standard | 2015-02-09 | ValidFAA registration status code V: Valid registration. All codes |
| N467WP | Boeing A75N1(PT17) |
Fixed-wing, single engine | Individual owner Washington |
Standard | 2015-01-28 | ValidFAA registration status code V: Valid registration. All codes |
| N64890 | Boeing B75N1 |
Fixed-wing, single engine | Individual owner North Carolina |
Standard | 2013-12-17 | 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.