Lycoming IO-540-B1A5
4 aircraft on the U.S. register carry a Lycoming IO-540-B1A5 engine, rated at about 290 horsepower. The Aero Commander 500 is the model most often fitted with it (2 aircraft). The aircraft carrying it were built between 1960 and 2025.
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-B1A5. FAA spelling: IO-540-B1A5.
Fitted to model families
Aero Commander 500 · Macias Richard Sr HARMON ROCKET II · Cessna 182 Skylane
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-B1A5 the component layer
The design is held under 1 type certificate (1E4, held by Lycoming Engines). The FAA has issued 34 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 15 failure reports with the FAA since 1995, 6 of them in the last ten years.
FAA orders 34 airworthiness directives · newest first
Failure reports 15 since · what operators and shops told the FAA
Parts most often reported as the reports name them
Latest reports
Certificates and bulletins
Safety bulletins 6 · 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
- Aero Commander 500 2 with this engine series
- Cessna 182 Skylane 1 with this engine series
- Texas 1 of these aircraft
- Massachusetts 1 of these aircraft
- Alabama 1 of these aircraft
- Civil Air Patrol 1 of these aircraft
- FAA orders naming the Lycoming IO-540-B1A5 34 airworthiness directives
- Failure reports on the Lycoming IO-540-B1A5 15 reports since 1995
These connections as data: /graph/engine/lycoming-io-540-b1a5.json · about the eFlight graph.
Aircraft newest certificates first · 4
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N343CA | Textron Aviation Inc 182T |
Fixed-wing, single engine | Civil Air Patrol Maxwell Afb, Alabama |
Standard | 2025-09-09 | ValidFAA registration status code V: Valid registration. All codes |
| N7737T | Macias Richard Sr HARMON ROCKET II |
Fixed-wing, single engine | Individual owner Texas |
Experimental | 2023-07-13 | ValidFAA registration status code V: Valid registration. All codes |
| N78345 | Aero Commander 500-B |
Fixed-wing, multi-engine | Peter Claire LTD George Town, |
Standard | 2021-07-20 | ValidFAA registration status code V: Valid registration. All codes |
| N6157X | Aero Commander 500-B |
Fixed-wing, multi-engine | Bluesky Geospatial LTD North Adams, Massachusetts |
Standard | 2019-11-21 | 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.