Lycoming O-540-B4B5
40 aircraft on the U.S. register carry a Lycoming O-540-B4B5 engine, rated at about 235 horsepower. The Maule M-7 is the model most often fitted with it (15 aircraft). The aircraft carrying it were built between 1964 and 2026.
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 O-540-B4B5. FAA spelling: O-540-B4B5.
Fitted to model families
Maule M-715Piper PA-28 Cherokee, Warrior, Archer and Arrow14Maule M-62Burgett Glenn E BEARHAWK 2601Condrey RV-101Hubert Richard A BEAR HAWK1Lynn A Riggs BEARHAWK1Maule M-8-2351Piper PA-25 Pawnee1Sample John W BEARHAWK1Tom Martin EVO 11Wallace Fred STOL CH 8011
Maule M-7 · Piper PA-28 Cherokee, Warrior, Archer and Arrow · Maule M-6 · Burgett Glenn E BEARHAWK 260 · Condrey RV-10 · Hubert Richard A BEAR HAWK · Lynn A Riggs BEARHAWK · Maule M-8-235 · Piper PA-25 Pawnee · Sample John W BEARHAWK
Where they are owner's state
Texas4Florida3Delaware3Wyoming2Utah2Montana2Minnesota2Michigan2Kansas2Illinois2
Kind of aircraft
Piston singles40 (100%)
When the aircraft were built by decade
What the FAA has certified, ordered and been told about the Lycoming O-540-B4B5 the component layer
The design is held under 1 type certificate (E-295, held by Lycoming Engines). The FAA has issued 23 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 17 failure reports with the FAA since 1995, 6 of them in the last ten years.
FAA orders 23 airworthiness directives · newest first
2026-09-142026-17-10 · Reciprocating Engine Cylinder Section · engine
2026-04-082026-04-11 · Engine (Reciprocating) · engine
2024-12-052024-21-02 · Engine (Reciprocating) · engine
2017-08-152017-16-11 · Reciprocating Engine Power Section · engine
2012-10-242012-19-01 · Crankshafts · engine
2012-03-272012-03-07 · Carburetor · engine
Failure reports 17 since · what operators and shops told the FAA
Parts most often reported as the reports name them
Impulse Coupling3Bolt2Rib2Casting1Engine1Fitting1Float1Fuel Tank1Low Stop1Pump1
Latest reports
2020-09-28Bolt: sheared
2020-04-10Bolt: broken
2016-01-15Casting: broken
2015-11-02Impulse Coupling: broken
2014-07-11Vent: kinked
Certificates and bulletins
E-295Type certificate held by Lycoming Engines · 47 models listed · revised April 30, 2013
Safety bulletins 6 · advice, not orders
2019-05-02NE-19-08 · Reciprocating Engine Cylinder Section - Lycoming Engines Parallel Valve Cylinders
2016-05-13NE-08-32R1 · Propeller Governor Idler Gear Shaft Set Screw
2014-03-24NE-14-13 · Reciprocating Engine - Cylinder Mounting Studs
2012-11-21NE-13-06 · Pushrod Shroud Spring Retainers, Engine Components Part No. AEL14995, for Lycoming Engines 320,...
2008-09-10NE-06-32R1 · Reciprocating Engine - Crankshaft
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
- Maule M-7 15 with this engine series
- Piper PA-28 Cherokee, Warrior, Archer and Arrow 14 with this engine series
- Maule M-6 2 with this engine series
- Piper PA-25 Pawnee 1 with this engine series
Where they are
Biggest operators
- Valiair Limited CO Trustee 1 of these aircraft
- Valiair Lc Trustee 1 of these aircraft
- Regent Trust CORP Trustee 1 of these aircraft
Airworthiness
- FAA orders naming the Lycoming O-540-B4B5 23 airworthiness directives
- Failure reports on the Lycoming O-540-B4B5 17 reports since 1995
Analytics
These connections as data: /graph/engine/lycoming-o-540-b4b5.json · about the eFlight graph.
Aircraft newest certificates first · 40
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N574HB | Maule M-7-235 |
Fixed-wing, single engine | Individual owner Utah |
Standard | 2026-08-22 | ValidFAA registration status code V: Valid registration. All codes |
| N7235A | Maule M-7-235A |
Fixed-wing, single engine | Valiair Limited CO Trustee Casper, Wyoming |
Standard | 2026-03-11 | ValidFAA registration status code V: Valid registration. All codes |
| N442PM | Condrey RV-10 |
Fixed-wing, single engine | Individual owner Florida |
Experimental | 2025-12-26 | ValidFAA registration status code V: Valid registration. All codes |
| N205MX | Maule M-8-235 |
Fixed-wing, single engine | Individual owner Montana |
Standard | 2025-10-16 | ValidFAA registration status code V: Valid registration. All codes |
| N8974W | Piper PA-28-235 |
Fixed-wing, single engine | Individual owner North Carolina |
Standard | 2025-08-28 | ValidFAA registration status code V: Valid registration. All codes |
| N787GW | Maule M-7-235C |
Fixed-wing, single engine | Regent Trust CORP Trustee Wichita, Kansas |
Standard | 2025-05-06 | ValidFAA registration status code V: Valid registration. All codes |
| N77077 | Piper PA-28-235 |
Fixed-wing, single engine | Hammarback INC East Grand Forks, Minnesota |
Standard | 2025-04-02 | ValidFAA registration status code V: Valid registration. All codes |
| N825HB | Piper PA-28-235 |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2025-02-19 | ValidFAA registration status code V: Valid registration. All codes |
| N719JS | Sample John W BEARHAWK |
Fixed-wing, single engine | Individual owner California |
Experimental | 2024-10-04 | ValidFAA registration status code V: Valid registration. All codes |
| N5937V | Piper PA-28-235 |
Fixed-wing, single engine | Individual owner Montana |
Standard | 2024-09-19 | ValidFAA registration status code V: Valid registration. All codes |
| N8889W | Piper PA-28-235 |
Fixed-wing, single engine | Individual owner Michigan |
Standard | 2024-08-27 | ValidFAA registration status code V: Valid registration. All codes |
| N4055X | Maule M-6-235 |
Fixed-wing, single engine | Atlas Air LLC Salt Lake City, Utah |
Standard | 2024-07-24 | ValidFAA registration status code V: Valid registration. All codes |
| N287MC | Maule M-7-235C |
Fixed-wing, single engine | Valiair Lc Trustee Casper, Wyoming |
Standard | 2024-03-13 | ValidFAA registration status code V: Valid registration. All codes |
| N68TY | Piper PA-28-235 |
Fixed-wing, single engine | Individual owner Arkansas |
Standard | 2023-11-06 | ValidFAA registration status code V: Valid registration. All codes |
| N595Z | Maule M-7-235B |
Fixed-wing, single engine | Individual owner Mississippi |
Standard | 2023-11-05 | ValidFAA registration status code V: Valid registration. All codes |
| N365NG | Piper PA-28-235 |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2023-10-22 | ValidFAA registration status code V: Valid registration. All codes |
| N166AZ | Piper PA-28-235 |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2023-09-01 | ValidFAA registration status code V: Valid registration. All codes |
| N79VE | Maule M-7-235C |
Fixed-wing, single engine | Isocelestian Concepts LLC Pelzer, South Carolina |
Standard | 2023-06-12 | ValidFAA registration status code V: Valid registration. All codes |
| N307HP | Tom Martin EVO 1 |
Fixed-wing, single engine | Individual owner Washington |
Experimental | 2023-04-11 | ValidFAA registration status code V: Valid registration. All codes |
| N656LR | Lynn A Riggs BEARHAWK |
Fixed-wing, single engine | Individual owner Minnesota |
Experimental | 2023-01-23 | ValidFAA registration status code V: Valid registration. All codes |
| N2611T | Maule M-7-235B |
Fixed-wing, single engine | W&H Services LLC Boerne, Texas |
Standard | 2023-01-12 | ValidFAA registration status code V: Valid registration. All codes |
| N886Z | Maule M-7-235 |
Fixed-wing, single engine | John Galt LLC Fairbanks, Alaska |
Multiple | 2022-10-21 | ValidFAA registration status code V: Valid registration. All codes |
| N812RR | Maule M-7-235C |
Fixed-wing, single engine | Astraeus LLC Greenport, New York |
Standard | 2021-10-14 | ValidFAA registration status code V: Valid registration. All codes |
| N17P | Maule M-7-235B |
Fixed-wing, single engine | Flying M LLC Reno, Nevada |
Experimental | 2021-09-21 | ValidFAA registration status code V: Valid registration. All codes |
| N719DF | Piper PA-28-235 |
Fixed-wing, single engine | Individual owner Louisiana |
Standard | 2019-07-31 | ValidFAA registration status code V: Valid registration. All codes |
| N9027W | Piper PA-28-235 |
Fixed-wing, single engine | AG Air Squadron One LLC Saint Joseph, Illinois |
Experimental | 2019-01-02 | ValidFAA registration status code V: Valid registration. All codes |
| N528RW | Piper PA-28-235 |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2018-11-29 | ValidFAA registration status code V: Valid registration. All codes |
| N422NP | Maule M-7-235B |
Fixed-wing, single engine | Co-owned owner Colorado |
Standard | 2018-10-23 | ValidFAA registration status code V: Valid registration. All codes |
| N7904C | Piper PA-28-235 |
Fixed-wing, single engine | Co-owned owner Oklahoma |
Standard | 2017-11-08 | ValidFAA registration status code V: Valid registration. All codes |
| N3019T | Maule M-7-235B |
Fixed-wing, single engine | Individual owner Kansas |
Standard | 2013-01-17 | ValidFAA registration status code V: Valid registration. All codes |
| N9289W | Piper PA-28-235 |
Fixed-wing, single engine | Individual owner Illinois |
Standard | 2011-07-29 | ValidFAA registration status code V: Valid registration. All codes |
| N963MR | Piper PA-28-235 |
Fixed-wing, single engine | Aerospace Trust Management LLC Wilmington, Delaware |
Standard | 2011-06-08 | ValidFAA registration status code V: Valid registration. All codes |
| N1058T | Maule M-7-235B |
Fixed-wing, single engine | Rock Island Aviation INC Wilmington, Delaware |
Standard | 2011-01-24 | ValidFAA registration status code V: Valid registration. All codes |
| N9209F | Maule M-7-235 |
Fixed-wing, single engine | Aerospace Trust Management LLC Trustee Wilmington, Delaware |
Standard | 2010-07-27 | ValidFAA registration status code V: Valid registration. All codes |
| N734J | Maule M-7-235B |
Fixed-wing, single engine | Individual owner Georgia |
Standard | 2010-03-04 | ValidFAA registration status code V: Valid registration. All codes |
| N681GB | Burgett Glenn E BEARHAWK 260 |
Fixed-wing, single engine | Individual owner Ohio |
Experimental | 2009-01-05 | ValidFAA registration status code V: Valid registration. All codes |
| N3179U | Maule M-6-235 |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2008-08-27 | ValidFAA registration status code V: Valid registration. All codes |
| N7313Z | Piper PA-25-235 |
Fixed-wing, single engine | Individual owner Connecticut |
Standard | 2007-03-09 | ValidFAA registration status code V: Valid registration. All codes |
| N616RS | Hubert Richard A BEAR HAWK |
Fixed-wing, single engine | Individual owner Michigan |
Experimental | 2007-01-29 | ValidFAA registration status code V: Valid registration. All codes |
| N292FW | Wallace Fred STOL CH 801 |
Fixed-wing, single engine | Individual owner Colorado |
Experimental | 2003-11-19 | 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.