- Manufacturer (registry)
- LYCOMING
- Model
- IO-540-L1A5
- Registry code
- 41679
- Installed in
- 0 registered aircraft
- Type
- Reciprocating
- Power
- 300 hp
- Data sheet
- TCDS1E4
- Holder
- Lycoming Engines
Model codes come from the FAA registry’s reference file.
On this page
Airworthiness directives that may apply · 20
ADs whose products match this engine model. Each AD’s applicability may narrow it by serial number, part number or configuration.
| 1973 | 1 |
|---|---|
| 1975 | 1 |
| 1977 | 1 |
| 1978 | 1 |
| 1979 | 1 |
| 1982 | 1 |
| 1992 | 1 |
| 1996 | 2 |
| 1997 | 1 |
| 1998 | 1 |
| 2002 | 1 |
| 2003 | 1 |
| 2004 | 2 |
| 2005 | 1 |
| 2006 | 1 |
| 2008 | 1 |
| 2009 | 1 |
| 2011 | 1 |
| 2012 | 2 |
| 2022 | 1 |
| 2024 | 1 |
| 2026 | 2 |
See all 27 ADs
Query with SQL
duckdb -csv -c "SELECT d.ad_number, d.status, d.subject, d.effective_date
FROM 'https://openairdocs.org/data/latest/faa_directive.parquet' d
WHERE d.ad_id IN (SELECT ad_id FROM 'https://openairdocs.org/data/latest/faa_engine_model_directive.parquet' WHERE engine_model_code IN ('41679'))
ORDER BY coalesce(d.effective_date, d.publication_date, d.issue_date) DESC, d.ad_number DESC"Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
SELECT d.ad_number, d.status, d.subject, d.effective_date
FROM 'https://openairdocs.org/data/latest/faa_directive.parquet' d
WHERE d.ad_id IN (SELECT ad_id FROM 'https://openairdocs.org/data/latest/faa_engine_model_directive.parquet' WHERE engine_model_code IN ('41679'))
ORDER BY coalesce(d.effective_date, d.publication_date, d.issue_date) DESC, d.ad_number DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
Information bulletins that may apply · 6
Engine · Lycoming IO-540-L1A5
SAIB NE-19-08Reciprocating Engine Cylinder Section - Lycoming Engines Parallel Valve CylindersSAIB NE-08-32R1Propeller Governor Idler Gear Shaft Set ScrewSAIB NE-14-13Reciprocating Engine - Cylinder Mounting StudsSAIB NE-13-06Pushrod Shroud Spring Retainers, Engine Components Part No. AEL14995, for Lycoming Engines 320, 360, and 540 Series EnginesSAIB NE-09-04Fuel Control/Reciprocating EnginesSAIB NE-06-32R1Reciprocating Engine - CrankshaftHistorical bulletins · 1
Query with SQL
duckdb -csv -c "SELECT s.saib_number, any_value(s.title) AS title, max(s.issue_date) AS issue_date, any_value(s.status) AS status
FROM 'https://openairdocs.org/data/latest/faa_saib.parquet' s
WHERE s.saib_id IN (SELECT saib_id FROM 'https://openairdocs.org/data/latest/faa_engine_model_saib.parquet' WHERE engine_model_code IN ('41679'))
GROUP BY s.saib_number ORDER BY issue_date DESC"Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
SELECT s.saib_number, any_value(s.title) AS title, max(s.issue_date) AS issue_date, any_value(s.status) AS status
FROM 'https://openairdocs.org/data/latest/faa_saib.parquet' s
WHERE s.saib_id IN (SELECT saib_id FROM 'https://openairdocs.org/data/latest/faa_engine_model_saib.parquet' WHERE engine_model_code IN ('41679'))
GROUP BY s.saib_number ORDER BY issue_date DESCRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
Registered aircraft · 0
No aircraft currently registered with this engine model
NTSB investigations
No NTSB investigations matched to aircraft with this engine modelMatched through the registry by N-number, so foreign aircraft and some older cases aren’t counted.
FAA incident reports
No reports matched to aircraft with this engine modelMatched through the registry by N-number, so foreign aircraft and some older reports aren’t counted.
Service difficulty reports · 11
SDR CA141205003Exhaust Duct · cracked(CAN) RIGHT HAND EXHAUST COLLECTOR CRACKED AT THE FLANGE FOR THE NR 1 CYLINDER. MUFFLER ALSO HAD SMALL CRACK ON NEAR/THE TOP SIDE OF THE EXIT DUCT.SDR CA140414012Rotor · failed(CAN) DURING PRE-FLIGHT GROUND RUNUP, WHEN RT MAGNETO WAS SELECTED, THE ENGINE WOULD DIE. RT MAGNETO WAS R & R WITH A SERVICEABLE MAGNETO. ENGINE GROUND RUN AND MAGNETO FUNCTION CHECKED SERVICEABLE. REMOVED MAGNETO WAS DISASSEMBLED TO INSPECT FOR CAUSE OF SDR CA110919004Valve · leaking(CAN) FUEL VENT VALVE REPLACE IN RT WING. UPON FUELING THE ACFT, FUEL WAS OBSERVED WEEPING FROM THE FUEL VENT TUBE. ACFT DEFUELLED AND AND VENT VALVE REPLACED. ACFT RETURNED TO SERVICE.SDR CA110707007Bearing · failedBEARING FAILED, LEADING TO OUTER COTTER PIN SHEARING OFF. NUT TIGHTENING WITH TIRE ROTATION, AND WHEEL + TIRE SEIZING COMPLETELY. APPROX 2 HR SPENT ON RUNWAY TO GET WHEEL UNSEIZED AND ACFT CLEAR OF RUNWAY.SDR CA100526005Tie Bolt · bentGEAR TIE BOLT WAS REPLACED AFTER IT FAILED ON LANDING IN EARLY 2009 WITH NEW AND IMPROVED VERSION IAW SB -32-08 LATEST REV. DURING A 100 HR INSP, IT WAS OBSERVED THAT THE RT TIE BOLT (PN U369) WAS BENT. THE ACFT WAS REMOVED FROM WHEEL GEAR AND INSTALLED ON SDR CA080303009Sump · unserviceable(CAN) OIL SUMP WAS REMOVED TO INSPECT SUMP BAFFLE IAW SB. INTERNAL CRACK IN THE SUMP WAS FOUND NEAR ONE OF THE MOUNTING LUGS. IAW THE SB, THE OIL SUMP BAFFLE HAD A LACK OF CLEARANCE AND HAD BEEN RUBBING THE BOTTOM OF THE SUMP. BAFFLE, AND SUMP HAD SIGNS OF WESDR CA071003007Baffle · failed(CAN) ENGINE OIL SUMP BAFFLE CONTACTING BOTTOM OF OIL SUMP. REPLACED OIL SUMP WITH A NEW ONE FROM MFG. INSPECTION ACCOMPLISHED BECAUSE OF REQUEST FROM CUSTOMER WHO SUBMITTED FAA SDR NR 2007FA0000760 AND 1. (TC NR 20071003007)SDR 2007FA0000760Baffle · crackedENGINE OIL SUMP BAFFLE CONTACTED BOTTOM OF OIL SUMP CRACKING BAFFLE SUPPORT ATTACH POINTS AND SHEARING RIVETS ATTACHING BAFFLE CENTER REINFORCEMENT. SHEARED RIVET LODGED IN OIL PRESSURE RELIEF VALVE CAUSING LOSS OF OIL PRESSURE. ENGINE REMOVED FOR OVERHAUL.SDR 2007FA0000761Baffle · crackedENGINE OIL SUMP BAFFLE CONTACTED BOTTOM OF OIL SUMP CRACKING BAFFLE SUPPORT ATTACH POINTS AND SHEARING RIVETS ATTACHING BAFFLE CENTER REINFORCEMENT.SDR CA041117001Skin · cracked(CAN) BELLY SKIN CRACKING AT VARIOUS (MULTIPLE POINTS) RIVETS LOOSENING ON INSPECTION COVER SKIN LAP RIVETS LOOSENING. SUSPECTED FROM TURBULENCE CREATED BY PROP INSTALLATION. REPAIRED BY PATCH AND REPLACEMENT OF RIVETS.SDR CA040901007Sump · leaking(CAN) AT A RECEIVING INSPECTION OF A NEW, ZERO TIME ENGINE, NUMEROUS VOIDS IN THE CASTING WERE DISCOVERED ON THE ENGINE SUMP. PORT SIDE NEAR PLUG AREA. THE TWO BIGGER ONES HAD A DEPTH MEASUREMENT OF .110 AND .070 RESPECTIVELY. ENGINE MANUFACTURER WAS CONTACT
Query with SQL
duckdb -csv -c "SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet' WHERE engine_model_key = 'IO540L1A5' ORDER BY difficulty_date DESC"
Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet' WHERE engine_model_key = 'IO540L1A5' ORDER BY difficulty_date DESC
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
STCs that may be installed · 42
Approved for this engine model: the STC’s model list names it on its data sheet, or a series that includes it. The registry doesn’t record which STCs an aircraft has.
STC SE00825WIInstallation of Specialty Products Spin-on oil filter on Lycoming Engines.STC SE04349CHInstallation of SureFly electronic ignitionSTC SE01954SEInstallation of engine crankcase seal.
See all 42 STCsQuery with SQL
duckdb -csv -c "SELECT s.stc_number, s.description, s.holder, s.status, s.status_date, m.matched_model
FROM (
SELECT stc_number, min(matched_model) AS matched_model
FROM 'https://openairdocs.org/data/latest/faa_engine_model_stc.parquet'
WHERE engine_model_code IN ('41679')
GROUP BY stc_number
) m JOIN 'https://openairdocs.org/data/latest/faa_stc.parquet' s USING (stc_number)
ORDER BY s.status = 'Current' DESC, s.status_date DESC, s.stc_number"Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.
SELECT s.stc_number, s.description, s.holder, s.status, s.status_date, m.matched_model
FROM (
SELECT stc_number, min(matched_model) AS matched_model
FROM 'https://openairdocs.org/data/latest/faa_engine_model_stc.parquet'
WHERE engine_model_code IN ('41679')
GROUP BY stc_number
) m JOIN 'https://openairdocs.org/data/latest/faa_stc.parquet' s USING (stc_number)
ORDER BY s.status = 'Current' DESC, s.status_date DESC, s.stc_numberRun it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.