Lycoming IO-540-C4D5D
31 aircraft on the U.S. register carry a Lycoming IO-540-C4D5D engine, rated at about 250 horsepower. The Daher (Socata) TB-20 is the model most often fitted with it (31 aircraft). The aircraft carrying it were built between 1983 and 2001.
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-C4D5D. FAA spelling: IO-540-C4D5D.
Where they are owner's state
Delaware4California4Oklahoma3New Mexico3Florida3Wyoming2Nevada2Michigan2Wisconsin1Washington1
Kind of aircraft
Piston singles31 (100%)
When the aircraft were built by decade
What the FAA has certified, ordered and been told about the Lycoming IO-540-C4D5D the component layer
The design is held under 1 type certificate (1E4, held by Lycoming Engines). The FAA has issued 32 airworthiness directives (orders that owners must comply with) that name this engine series.
FAA orders 32 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
2015-11-032015-19-07 · Fuel injector fuel lines · engine
2012-10-242012-19-01 · Crankshafts · engine
Certificates and bulletins
1E4Type certificate held by Lycoming Engines · 81 models listed · revised February 28, 2018
Safety bulletins 8 · 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,...
2011-03-31NE-08-26R3 · Magneto/Distributor
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
- Daher (Socata) TB-20 31 with this engine series
Where they are
- Delaware 4 of these aircraft
- California 4 of these aircraft
- Oklahoma 3 of these aircraft
- New Mexico 3 of these aircraft
- Florida 3 of these aircraft
Biggest operators
- Sky West Aviation INC Trustee 3 of these aircraft
- Southern Aircraft Consultancy INC Trustee 2 of these aircraft
- Aircraft Guaranty CORP Trustee 2 of these aircraft
Airworthiness
- FAA orders naming the Lycoming IO-540-C4D5D 32 airworthiness directives
Analytics
These connections as data: /graph/engine/lycoming-io-540-c4d5d.json · about the eFlight graph.
Aircraft newest certificates first · 31
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N5ZY | Socata TB-20 TRINIDAD |
Fixed-wing, single engine | International Air Services INC Trustee Carson City, Nevada |
Standard | 2026-10-01 | ValidFAA registration status code V: Valid registration. All codes |
| N20TB | Socata TB20 |
Fixed-wing, single engine | Southern Aircraft Consultancy INC Trustee Casper, Wyoming |
Standard | 2026-02-23 | ValidFAA registration status code V: Valid registration. All codes |
| N699MS | Socata TB20 |
Fixed-wing, single engine | Southern Aircraft Consultancy INC Trustee Casper, Wyoming |
Standard | 2026-02-23 | ValidFAA registration status code V: Valid registration. All codes |
| N525DV | Socata TB20 |
Fixed-wing, single engine | Sky West Aviation INC Trustee Albuquerque, New Mexico |
Standard | 2026-01-20 | ValidFAA registration status code V: Valid registration. All codes |
| N500TB | Socata TB20 |
Fixed-wing, single engine | Sky West Aviation INC Trustee Albuquerque, New Mexico |
Standard | 2025-10-02 | ValidFAA registration status code V: Valid registration. All codes |
| N351TB | Socata TB-20 TRINIDAD |
Fixed-wing, single engine | Letter Ride LLC Woodbury, Minnesota |
Standard | 2025-06-05 | ValidFAA registration status code V: Valid registration. All codes |
| N343TB | Socata TB-20 TRINIDAD |
Fixed-wing, single engine | Qualitair LLC Trustee Michelstadt, |
Standard | 2024-12-10 | ValidFAA registration status code V: Valid registration. All codes |
| N260TB | Socata TB-20 TRINIDAD |
Fixed-wing, single engine | Aircraft Guaranty CORP Trustee Oklahoma City, Oklahoma |
Standard | 2024-09-07 | ValidFAA registration status code V: Valid registration. All codes |
| N718EW | Socata TB20 |
Fixed-wing, single engine | Individual owner Michigan |
Standard | 2024-08-13 | ValidFAA registration status code V: Valid registration. All codes |
| N358TB | Socata TB-20 TRINIDAD |
Fixed-wing, single engine | Individual owner Michigan |
Standard | 2024-06-01 | ValidFAA registration status code V: Valid registration. All codes |
| N366TB | Socata TB-20 TRINIDAD |
Fixed-wing, single engine | Louie CO Pilot LLC Liberty Lake, Washington |
Standard | 2024-04-19 | ValidFAA registration status code V: Valid registration. All codes |
| N677TB | Socata TB-20 TRINIDAD |
Fixed-wing, single engine | Individual owner California |
Standard | 2023-06-24 | ValidFAA registration status code V: Valid registration. All codes |
| N219WE | Socata TB-20 TRINIDAD |
Fixed-wing, single engine | Individual owner California |
Standard | 2023-05-31 | ValidFAA registration status code V: Valid registration. All codes |
| N341TB | Socata TB-20 TRINIDAD |
Fixed-wing, single engine | Wil Aviate LLC Merced, California |
Standard | 2023-04-12 | ValidFAA registration status code V: Valid registration. All codes |
| N692TB | Socata TB-20 TRINIDAD |
Fixed-wing, single engine | Individual owner Oklahoma |
Standard | 2023-04-08 | ValidFAA registration status code V: Valid registration. All codes |
| N988GT | Socata TB-20 TRINIDAD |
Fixed-wing, single engine | Individual owner Tennessee |
Standard | 2023-02-25 | ValidFAA registration status code V: Valid registration. All codes |
| N356TB | Socata TB-20 TRINIDAD |
Fixed-wing, single engine | Sky West Aviation INC Trustee Albuquerque, New Mexico |
Standard | 2022-11-04 | ValidFAA registration status code V: Valid registration. All codes |
| N204YU | Socata TB20 |
Fixed-wing, single engine | Fly Invest INC Trustee Wilmington, Delaware |
Standard | 2021-09-16 | ValidFAA registration status code V: Valid registration. All codes |
| N221AM | Socata TB-20 TRINIDAD |
Fixed-wing, single engine | Octopus Flying Club INC Riverdale, Maryland |
Standard | 2020-08-27 | ValidFAA registration status code V: Valid registration. All codes |
| N2812Y | Socata TB-20 TRINIDAD |
Fixed-wing, single engine | Thor and Associates INC Montgomery, Texas |
Standard | 2020-08-01 | ValidFAA registration status code V: Valid registration. All codes |
| N8675C | Socata TB-20 TRINIDAD |
Fixed-wing, single engine | Co-owned owner Wisconsin |
Standard | 2019-12-27 | ValidFAA registration status code V: Valid registration. All codes |
| N204ME | Socata TB20 |
Fixed-wing, single engine | Argo Aviation INC Trustee Wilmington, Delaware |
Standard | 2019-08-05 | ValidFAA registration status code V: Valid registration. All codes |
| N700SN | Socata TB20 |
Fixed-wing, single engine | Aerospace Trust Management LLC Trustee Wilmington, Delaware |
Standard | 2018-10-09 | ValidFAA registration status code V: Valid registration. All codes |
| N660MM | Socata TB20 |
Fixed-wing, single engine | Aircraft Guaranty CORP Trustee Oklahoma City, Oklahoma |
Standard | 2017-07-11 | ValidFAA registration status code V: Valid registration. All codes |
| N557TB | Socata TB-20 TRINIDAD |
Fixed-wing, single engine | Airborn Flight Services INC Farmingdale, New York |
Standard | 2017-06-01 | ValidFAA registration status code V: Valid registration. All codes |
| N676TB | Socata TB-20 TRINIDAD |
Fixed-wing, single engine | Individual owner California |
Standard | 2017-01-26 | ValidFAA registration status code V: Valid registration. All codes |
| N965TB | Socata TB20 |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2012-03-26 | ValidFAA registration status code V: Valid registration. All codes |
| N5559Z | Socata TB-20 TRINIDAD |
Fixed-wing, single engine | Trinidad 92 LLC The Villages, Florida |
Standard | 2012-02-16 | ValidFAA registration status code V: Valid registration. All codes |
| N324BB | Socata TB-20 TRINIDAD |
Fixed-wing, single engine | N324Bbjf INC Owner Trustee Wilmington, Delaware |
Standard | 2011-05-23 | ValidFAA registration status code V: Valid registration. All codes |
| N63TB | Socata TB-20 TRINIDAD |
Fixed-wing, single engine | Individual owner Nevada |
Standard | 1987-01-15 | ValidFAA registration status code V: Valid registration. All codes |
| N966TB | Socata TB20 |
Fixed-wing, single engine | A To Z Aircraft Services INC Pembroke Pines, Florida |
Standard | 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.