Lycoming IO-540-L1B5D
4 aircraft on the U.S. register carry a Lycoming IO-540-L1B5D engine, rated at about 300 horsepower. The Aerospatiale TB 30 EPSILON is the model most often fitted with it (2 aircraft). The aircraft carrying it were built between 1986 and 2010.
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 IO-540-L1B5D. FAA spelling: IO-540-L1B5D.
Fitted to model families
Aerospatiale TB 30 EPSILON · Extra Flugzeugbau Gmbh EA-300 · Riley Mark T VELOCITY XL5-RG
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 IO-540-L1B5D the component layer
The design is held under 1 type certificate (1E4, held by Lycoming Engines). The FAA has issued 21 airworthiness directives (orders that owners must comply with) that name this engine series.
FAA orders 21 airworthiness directives · newest first
Certificates and bulletins
Safety bulletins 8 · advice, not orders
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
- Extra Flugzeugbau Gmbh EA-300 1 with this engine series
- Wisconsin 1 of these aircraft
- Texas 1 of these aircraft
- South Dakota 1 of these aircraft
- Delaware 1 of these aircraft
- Alliance Aircraft Sales INC 1 of these aircraft
- FAA orders naming the Lycoming IO-540-L1B5D 21 airworthiness directives
These connections as data: /graph/engine/lycoming-io-540-l1b5d.json · about the eFlight graph.
Aircraft newest certificates first · 4
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N129SH | Aerospatiale TB 30 EPSILON |
Fixed-wing, single engine | Academy Aviation and Technology Consulting LLC Cedar Park, Texas |
Experimental | 2025-08-19 | ValidFAA registration status code V: Valid registration. All codes |
| N61SH | Aerospatiale TB 30 EPSILON |
Fixed-wing, single engine | Alliance Aircraft Sales INC Pierre, South Dakota |
Experimental | 2025-02-12 | ValidFAA registration status code V: Valid registration. All codes |
| N929X | Riley Mark T VELOCITY XL5-RG |
Fixed-wing, single engine | Hurricane Hideout LLC Wilmington, Delaware |
Experimental | 2023-01-06 | ValidFAA registration status code V: Valid registration. All codes |
| N78EX | Extra Flugzeugbau Gmbh EA 300/L |
Fixed-wing, single engine | Inverted Horizons INC Pleasant Prairie, Wisconsin |
Experimental | 2003-04-18 | 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.